1 Answer

Thomas Jiang · Answer 1 · 2020-09-22T23:13:25+0000

Answer:

The radius is
$r=10\ in$ and the diameter is
$D=20\ in$

Explanation:

we know that

The area of the circle is equal to

$A=\pi r^(2)$

In this problem we have

$A=314\ in^(2)$

substitute and solve for r

assume

$\pi =3.14$

314=(3.14)r^(2)

r^(2)=314/3.14

r^(2)=100

$r=10\ in$

Find the diameter

D=2r

$D=2(10)=20\ in$

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