The area of a circle is 36π square units. How many units long is its radius? (Use only the digits 0 - 9 and the decimal point, if needed, to write the answer.)

Question

asked Apr 5, 2019 187k views

1 Answer

Ljedrz · Answer 1 · 2019-04-09T15:27:31+0000

Answer:

The radius is
$r=6\ units$

Explanation:

we know that

The area of a circle is equal to

$A=\pi r^(2)$

In this problem we have

$A=36\pi\ units^(2)$

substitute in the formula and solve for r

$36\pi=\pi r^(2)$

Simplify

36=r^(2)

square root both sides

$r=6\ units$