Question

What is diameter of circle that has an area of 121π

Answer 1

Answer:

area=$4\pi r^{2}$

$4\pi r^{2}$=121$\pi$

$4 r^{2}$=121

$r^{2}$=121/4

r=11/2

d=2r

d=2*11/2

d=11 cm

Answer 2

Answer:

d=11

Step-by-step explanation:Ge = 2 Pi R Square