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cupoosta [38]
2 years ago
14

Determine the area of each circle need to use 3.14 for pi and round to the nearest tenth

Mathematics
2 answers:
Karo-lina-s [1.5K]2 years ago
8 0

Answer:

Area of circle = \pi r^2

\pi=3.14 \\ r=28\ \text{in}

\pi r^2=3.14 \times (28 \ \text{in})^2=2461.76 \ \text{in}^2

Since the question ask to round to the nearest tenth, the answer is 2461.8 \ \text{in}^2

maks197457 [2]2 years ago
5 0

Answer:

2461.8 in²

Step-by-step explanation:

Area of a circle = r²π

Using r=28 and π=3.14:

Area = 28²×3.14 ≈ 2461.8 in² rounded to the nearest tenth (ans)

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Kinda stuck please help would appreciate it :)
V125BC [204]

<em>Answer,</em>

<em>2w - 5 = 8</em>


<u><em>Hope this helps :-)</em></u>

8 0
2 years ago
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Britney building dollhouse that was a scale model of her own house the dog House was 10 inches long while her actual house had a
defon

9514 1404 393

Answer:

  32 feet

Step-by-step explanation:

The width of the doll house is 8/10 of the length of the doll house, so the actual house will have a width that is 8/10 of its length:

  (8/10)(40 ft) = 32 ft

The actual house is 32 feet wide.

4 0
3 years ago
The reciprocal of 1/8
Volgvan

Hey there!

Another name for "reciprocal" is inverse

1/8 reciprocal is 8/1

Answer: 8/1

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

7 0
3 years ago
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A cylinder has a radius of 20 cm and a height of 2 cm. Find the height of another cylinder that has a radius of 4 cm and the sam
iogann1982 [59]

Answer:

The height of the another cylinder 'h'  = 7

Step-by-step explanation:

<u>Explanation</u>:-

<u>Step 1:-</u>

Surface area of the cylinder  = 2пrh + 2пr^2

Given radius of first cylinder is 20cm

given height of the first cylinder is 2 cm

The surface area of first cylinder is = 2пrh + 2пr^2

                                                          = 2п(20)(2)+2п(2)^2

                                                          = 4п(20+2)

The surface area of first cylinder is  88п

<u>Step 2</u>:

given data The surface area of first cylinder is  88п is same as second cylinder also

<u>Find the height of the second cylinder</u>

Given Radius of the second cylinder r = 4

Surface area of the cylinder  = 2пrh + 2пr^2 = 88п

                                                   2п(4)h+2п(4)^2 =88п

on simplification we get

                                   2п (4h+16) = 88п

after cancellation '2п' value and on simplification, we get

                                    4h+16 = 44

                                    4h = 44-16

                                  4h = 28

                                 h=7

Therefore the height of the another cylinder is 'h' =7

                                   

3 0
3 years ago
I REALLY NEED HELP FAST, will mark you the brainliest if you answer this first :D
VLD [36.1K]

Step-by-step explanation:

required \: scale  \\ =  \frac{12 \frac{1}{2} }{1 \frac{9}{16} }  \\  \\  =  \frac{ \frac{25}{2} }{ \frac{25}{16} }  =  \frac{25}{2}  \times  \frac{16}{25}  =  \frac{1}{2}  \times  \frac{16}{1}   \\  \\ = 8 \:  :  \: 1

6 0
3 years ago
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