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

can 4.5 be rounded up to 4? nope.

For this case we have as data that the area of the circle is given by:

According to the following formula, we must find the radius of the circle:

Taking we have:

Finally, the radius of the circle is 4.5ft

4.5ft