Question

The area of circle Z is 64ft?.

What is the value of r?
r= 4 ft
r= 8 ft
D
r = 16 ft
Area
r= 32 ft
Z

Answer 1

8 ft

Explanation:

`\because \: r = \sqrt{ (Area)/(\pi) } \\ \\ \therefore \: r = \sqrt{ (64\pi)/(\pi) } \\ \\ \therefore \:r = √(64) \\ \\ \therefore r = 8 \: ft`

Answer 2

r=8

Explanation:

Using the formula they gave us you could plug in the area (64) and divide it by pi which cancels out the pi so taking the square root of 64 gives you 8FT

Hope this helps :)