What is the area of the blue shaded figure if A=28 cm and B=14 cm?
Use 3.14 to approximate π.
Answers
Answer:
153.86[tex]cm^{2}[/tex]
Step-by-step explanation:
For the white semicircles:
B=14cm is also the diameter, we know r=1/2diameter, so r=1/2(14)=7
Awhite=1/2π[tex]r^{2}[/tex]
Awhite=1/2π([tex]7^{2}[/tex])
Awhite=76.93[tex]cm^{2}[/tex]
For the blue semicircle:
B=14cm is also the radius
Ablue=1/2π[tex]r^{2}[/tex]
Ablue=1/2π([tex]14^{2}[/tex])
Ablue=307.72[tex]cm^{2}[/tex]
Shaded area:
Ashaded=Ablue-2(Awhite)
We use this equation since there are two white semicircles.
Ashaded=307.72-2(76.93)
Ashaded=153.86[tex]cm^{2}[/tex]
Answer:
615.44cm^2
Step-by-step explanation:
the big semicircle has a radius of 28cm
then you find the area of the big semicircle which is 1/2 x 28^2 x pi
pi=3.14
28^2=784
1/2 x 784 x 3.14=1230.88
the small semicircle has a radius of 14cm
1/2 x 14^2 x pi
1/2 x 196 x 3.14=307.72
since there are two small semicircle you need to times 307.72 by 2
307.72 x 2=615.44
now to find the area of the blue shaded you need to do
1230.88-615.44=615.44cm^2
Related Questions
What is the missing Angle
Answers
Answer:
31°
Step-by-step explanation:
As there is a z shape: we can deduce that:
5x+12+x=180
So now we solve this to get x
6x=180-12
6x=168
x=168÷6
x=31
31°
Answer:31
Step-by-step explanation:
i used a protractor
2ac if a =1/2 and c = 9
Answers
Answer:
Step-by-step explanation:
a = 1/2
c = 9
2ac
= 2 x 1/2 x 9
= 9 (ANS)
There were 20 rides at the fair. Jhon road 80% of the rides. How many rides did Jhon NOT ride?
Answers
Answer:
16
Step-by-step explanation:
80% of 20 is 16
Answer:
16
Step-by-step explanation:
whoever answers correctly = brainliest
Answers
Answer:
<5 is half of <3 (112/2=56)
<6 is the same as <3. I know this to be true because when the angle are like across from each other. Basically the number that are across from each other (hope that makes sense). <1 is the same as <8 and they are both half of <3 which is 56.
Step-by-step explanation:
Have a great day/night/life XD
My grade is 100% and I do a test worth 30% of my grade. If I score a 25% on my test, what would be my current grade?
Answers
Answer:
Your grade is now a 62.5%
Step-by-step explanation:
all you have to do is find the average
Answer:
a D
Step-by-step explanation: 62.7 which is a d
help pls ill give max points
Answers
Answer:
C
Step-by-step explanation:
The original is L, if it was roated 180 degrees clockwise it would be in the same spot
Answer:
c
Step-by-step explanation:
The original is L if it was rotated 180 degrees clock wise it will most likely be in the same spot hope this helps <3
Javier walks up to a tank of water that can hold up to 10 gallons. When it is active, a drain empties water from the tank at a constant rate. When Javier first sees the tank, it contains 7 gallons of water. Three minutes later, the tank contains 5 gallons of water.
At what rate is the amount of water in the tank changing? Use a signed number, and include the unit of measurement in your answer.
How many more minutes will it take for the tank to drain completely? Explain or show your reasoning.
How many minutes before Javier arrived was the water tank completely full? Explain or show your reasoning.
Answers
Answer:1) Gallons per minute change is -2/3 gallons per minute since it decreases by 2 gallons in 3 minutes
2) we have 5 gallons and lose 2/3 gallons per minute
(2/3 gal/minute)(x minutes) = 5 gallons
x = 5(3/2) = 15/2 = 7.5 minutes to drain the other 5 gallons
3) There were 10 gallons when the tank is full
That is 3 gallons more than the 7 gals there when Jada arrived.
(2/3)(x) = 3
x = 3(3/2) = 9/2 = 4 1/2 minutes
The tank was full 4 1/2 minutes before Jada arrived.
Solve each inequality. Graph the solution on a on a number line.
p-7/12>3/10
Answers
Answer:
so to solve an inequality you just treat the inequaltity sign like an equals sign except if you multiply by negative 1 you flip the direction of the sign.
p-7/12>3/10
add 7/12 to both sides
p>7/12+3/10
p>35/60+18/60
p>53/60
so if you had to graph this on a number line you would have an open circle on 53/60 and an arrow coming off pointing to the right
Step-by-step explanation:
can some help i cant figure this out
Answers
Answer:
240cm²
Step-by-step explanation:
area of a triangle:
½ x b x h
= ½ x 6 x 4
= 3 x 4
= 12.
since there are 8 of the same triangles, they will all have the same area. so to work out the total area of a triangles, we times the area of one triangle by the 8 triangles in the polygon.
12 x 8 = 96.
for the square in the middle:
area of a square = length x width
area of a square = 12 x 12 = 144.
all we need to do is add these two totals together.
144 + 96 =240cm².
we use the units cm², because we have been multiplying xcm x ycm which can be simplified to cm² :)
WILL CHOOSE BRAINLIEST, I NEED HELP WITH #19!
Answers
Answer:
the first bounce took away 80 meters from the bounce and on the second bounce it took away 64 meters
Step-by-step explanation:
Answer:
wasn't sure if you needed the equation but I've shown it anyways
h = 8b² - 104b + 496
Step-by-step explanation:
hope it makes sense any further clarification let me know :)
help ill give brainlest pls
Answers
Answer:D
Step-by-step explanation: angle a and b are already labeled
Answer:
D. 3 units
Step-by-step explanation:
Rotation does not affect the lengths of segments. Segment AB is given as 3 units. After rotation, segment A'B' will remain unchanged at 3 units.
A'B' = 3 units
Please Help me solve this (Who ever answers correctly will get brainlest)
Answers
Answer:
64.8-inches
1.8-yards
Step-by-step explanation:
every inch in ft is 12 so if you multiply that by 5.4 you'll get 64.8 inches
every yard is 3 ft s when you do the math you'll get 1.8 yards
A 20 feet tree casts a shadow that is 32 feet long. what is the distance from the top of the tree to the tip of the shadow?
PLEASE HELP!!!!!!!!!
Answers
Answer:
12 literaly how old are u bro
Step-by-step explanation:
20^2+32^2=c^2
400+1024=c^2
1424=c^2
square root of 1424 is the answer which is 37.7 feet squared
(i believe that is correct)
Im genuinely confused someone help answer these 5? I will give Brainlist
Answers
simplify: -2(4 -3y) + 5 (4y - 1)
- 13 + 26y
Answer:
1 is 10x - 8,( 2 is 14n + 15,( 3 is 20y +11,( 4 is -5x - 17,( 5 26y - 13
Step-by-step explanation:
1 you use distributive property so 2 * 5x and 2 * 4, 2 you use distributive property again and add 10n and 4n, 3 you use distributive property and since you multiplying with 2 negatives it makes them positive, 4 you use distributive property and subtracting -15 by two becomes -17, 5 you use distributive property on both and add the rest together.
Help Me! Please! Please! Please!
Suppose there were 21 cups of flour used in the recipe. How many cookies would this make?
A) 336 cookies
B) 342 cookies
C) 348 cookies
D) 350 cookies
Answers
Answer:
a)336 cookies
Step-by-step explanation:
if u look at graph x is going by 3 and y is going by 48 so at 21 cups of flour u look at x and go up to the line and see wher it lines up which it lines to 336
12 = 192, 24 = 384
the answer is 384
someone help me with this math question please- ;-;
Answers
Answer:
24) 17.5 Quarts
23) 3520FT
20) 6600FT
21) 6.5 pt
19) 24 Fl Oz
22) 6750 Ib
Step-by-step explanation:
1 Mile= 5280
1 Cup= 8 Fl Oz
1 Pint= 2 Cups
1 Quart= 2 Pints
1 Ton= 2,000 Pounds
ILL GIVE BRAINLEST
Miguel is organizing his collection of sports memorabilia into glass display cases. He wants to cover each side of the cases with a protective film to protect the glass. This net represents a single display case.
How much film is needed to cover each display case?
Here's pic:
Answers
Translate each expression or equation into a verbal phrase.
21) 2 (5 + t) = 8
22)- 10 = 3
23) 7(b + 2)
24) 2c 5
25) 17(y + 11)
26) 3b 8
Answers
Answer:
i hope this is right aaeae
Step-by-step explanation:
21) five plus t times two equals eight
22) negative ten equals three
23) b plus two times seven
24) two times c times five
25) y plus eleven times seventeen
26) three times b times eight
I have the answer but I need proof I did it. Pls edit the pic and show work I will give a brainlist point.
Answers
Answer:
the formula for parallelogram is B*H so answer is 36 which u have
Step-by-step explanation:
so area of parallelogram photos is b*h which is6*4=24
area of parallelogram board is 24*36
now divide to find number of photos
24*36/24
24 cancel each other and answer is 36
How do humans interact with the geosphere? Explain
Answers
Answer:
there are many ways
Step-by-step explanation: we walk on the crust of our earth interact with rocks, and some glasses are made of molten lava. which is also from a specific layer of earth (sorry, dont remember which) and some people drill in the mines and maybe even get lower than the crust. i hope this helps :/
Somebody help me with this question, please!
Two lines, A and B, are represented by the following equations: Line A: 3x + 3y = 12 Line B: x + y = 4 Which statement is true about the solution to the set of equations? (4 points)
Select one:
A. It is (12, 4).
B. There are infinitely many solutions.
C. It is (4, 12).
D. There is no solution.
Answers
Answer:
it is definitely the option of C
Answer:
b infinite solutions
Step-by-step explanation:
3x+3y= 12
when divided by three you get
x+y=4
This can have many solutions such as
x=1 y=3
x=1.5 y=2.5
x=3.99
y=0.01
etc
Solve for x. Show all your work.
Answers
Answer:
Step-by-step explanation:
There we go :)
Equation:
Solution: x=
Marie drives for___________________hours.
Answers
Answer:
Marie drives for 3 hours.
Step-by-step explanation:
Equation d = rx
d = distance traveled
r = rate of speed
x = # of hours driven
35x = 105
x = 105 / 35
x = 3
Marie drives for 3 hours.
Select the function table that matches the equation below.
PLEASE HELP!!!!!!!!!!!
y=−8x+4
Answers
Answer:
C
Step-by-step explanation:
-8*-5 + 4 = 28
-8*0+4=4
-8*2+4=-12
(I NEED HELP PLEASE)
Use the given scale factor and the side lengths of the scale drawing to determine the side lengths of the real object.
A. side a is 12 inches long and side be is 16 inches long and side c is 20 inches long
B. side a is 3 inches long and side b is 4 inches long and side c is 5 inches long,
C. side a is 4 inches long and side b is 6 inches long and side c is 12 inches long,
D. side a is 8 inches long and side b is 10 inches long and side c is 12 inches long
Answers
The wholesale price for a chair is $124. A certain furniture store marks up the wholesale price by 16%. Find the price of the chair in the furniture store.
Round your answer to the nearest cent, as necessary.
Answers
Answer:
$143.84
Step-by-step explanation:
Given the following question:
Initial price of the chair was $124....
Marked up 16% (which means the price has increased by 16%)
Find the new price of the chair...
In order to find the answer, we find 16% of a given number in till it equals 124 which was the initial price.
[tex]\frac{143.84-124}{124} \times100=143.84-124=19.84\div124=0.16\times100=16[/tex]
16% of 143.84 is 124
143.84 is already rounded to the nearest cent
Which means the new price of the chair is "$143.84"
Hope this helps.
Please Help! Double Points!
Which equation represents the table above between the cost, c, and the number of months, n?
A) c = 30n
B) c = 10n
C) c = n + 30
D) c = n + 10
Answers
Answer:
C is the correct answer
Step-by-step explanation:
Hope this helped you, sorry I don't have an explanation.
B
EXPLAINED:
C=10n, if you were to fill in the variables with chart it would be correct.
1) 30=10•3
2) 60=10•6
3) 90=10•9
4) 120=10•12
Footnote: (•) means multiplying or times
please help me solve these!! i know its a lot but i dont understand it.!!!
Answers
help me with this please (•‿•)
Answers
Answer:
Not completely sure about A but I know the rest!
Explanation:
a) burritos are the independent variable because it is labeled as x. X will always be the independent variable. The reason I am confused is because all throughout my learning I was told "time" will always be independent and it had always proved to be true. I would just go with burritos though.
b) linear function is y=0.75x, with 0.75 being the slope representing the amount of time taken to make x amount of burritos. I see you already did most of the work! You just have to remember that to find slope (or m), that you do change in y/change in x.
c) when graphing, draw a point at the origin, (0,0). Then count 0.75 units up, and move 1 unit to the right. Your line should be from left to right going "upward".
d) your answer for d is correct
PLEASE HELPPPPPP
Trapezoid WXYZ is shown on the coordinate grid.
Trapezoid WXYZ is dilated with the origin as the center of dilation using the rule (x, y) --> (4x, 4y) to create Trapezoid W'X'Y'Z'.
Which statement is TRUE?
A. Trapezoid W'X'Y'Z' is smaller than Trapezoid WXYZ because the scale factor is less than one.
B. Trapezoid W'X'Y'Z' is smaller than Trapezoid WXYZ because the scale factor is greater than one.
C. Trapezoid W'X'Y'Z' is larger than Trapezoid WXYZ because the scale factor is less than one.
D. Trapezoid W'X'Y'Z' is larger than Trapezoid WXYZ because the scale factor is greater than one.
Answers
Answer:
D
Step-by-step explanation:
in the question the scale factor is 4 so that means it is a dilation (getting larger) because the scale factor is >1