Solve.
-The area of a circle is found by the equationon A $\mathrm { A } = \pi \mathrm { r } ^ { 2 }$ .. If the area a of a certain circle is 64? square inches, find its radius r.
A)128 inches
B) $32 \pi$ inch inches
C)8 inches
D)16 inches

Question

Quizplus · Accepted Answer

The area of a circle is given by $A = \pi r^2$. Given $A = 64$ square inches, we solve for $r$ by dividing both sides by $\pi$ and then taking the square root: $r = \sqrt{\frac{64}{\pi}}$. This simplifies to $r = 8$ inches, since $64 = 8^2$.

Solve -The Area of a Circle Is Found by the Equationon

Solve
-The Area of a Circle Is Found by the Equationon