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coldgirl [10]
4 years ago
5

If the area of a circle is 28.28 square in, then what is its radius? and show work

Mathematics
2 answers:
Usimov [2.4K]4 years ago
8 0
Hello!

The formula for area of a circle is A = πr², where r is the radius. Since you are given the area of the circle, you can plug it for A in the formula and solve algebraically for the radius, r. We'll use 3.14 for π.

A = πr²
28.28 = 3.14r²
28.28 = 9.87r
2.87 = r

The radius of the circle is approximately 2.87 inches.
posledela4 years ago
3 0
r = 3 in

This is because 28.28/3.14=9
√9=3

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