Question

The area of circle Z is 64 ft2.

What is the value of r?

r = 4 ft
r = 8 ft
r = 16 ft
r = 32 ft

Answer 1

Answer:

r=4.51 ft

Step-by-step explanation:

Area of a circle is given by

$A=\pi r^{2}$ where A is area and r is the radius. Making r the subject of the above formula then

$r=\sqrt {\frac {A}{\pi}}$

Substituting A with 64 then

$r=\sqrt {\frac {64}{\pi}}\approx 4.51 ft$

Answer 2

Answer:

its 8

Step-by-step explanation:

i got it right