Question

what is the area of this circle in square centimeters? 9π 18π 81π 90π 9 cm

Explanation:

Step1: Recall area formula

$A = \pi r^{2}$

Step2: Substitute radius value

$r = 9$, so $A=\pi\times9^{2}=81\pi$

Answer:

$81\pi$ square - centimeters