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erma4kov [3.2K]
3 years ago
13

What is the exact area of a circle whose diameter is 14 cm?

Mathematics
1 answer:
vodka [1.7K]3 years ago
7 0
Ok so the formula for the area of a circle is pi r2 so first the radius half of 14 is 7 so 7 squared would be 49 so it would be C. and if you wanted to get the estimation you would just multiply pi to 49 I hope this helps :) 
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The perimeter of a rectangle is 250 inches. if the length is 4 times as big as the width, what is the length and width of the re
yarga [219]

The length and width of the rectangle are 7.90 inches and 31.6 inches respectively

It is given that,

Let the length of the rectangle = l

Let the width of the rectangle = w

The perimeter of the rectangle = 250 inches

l x w = 250 ....eq 1

Then,

Length is 4 times as big as width

4l = w

We need to find, the length and width of the rectangle

Putting the value of w in eqn 1

We get,

4l^{2} = 250

l^{2} = 62.5

l = \sqrt{62.5}

l = 7.90

Similarly, we can get,

w = 4l

w = 4 x 7.90

w = 31.6

Hence, the length and width of the rectangle are 7.90 inches and 31.6 inches respectively

To learn more about, perimeter, here

brainly.com/question/18793958

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8 0
1 year ago
If C=5/9(F-32), what is F when C=20?
siniylev [52]
20 = 5 / 9(F-32)
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8 0
2 years ago
Read 2 more answers
Solve by substitution: <br> Y= 2x+5 <br> Y=2x+1
julia-pushkina [17]
Just put down no solution. It's unsolvable.
3 0
3 years ago
Need help on this math problem of parallelograms.
tamaranim1 [39]

Answer:

z=124 because it opposite

Step-by-step explanation:

6 0
2 years ago
58 = 7/4x well, basically I am really bad with fractions, and I'm supposed to do this on a computer, I don't have a calculator I
KiRa [710]
58=7/4x
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232=7x
Divide both sides by 7:
x=33.14 (rounded)

Hope this helps :)
4 0
3 years ago
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