Question

What is the value of r?O r= 4 ftr= 8 ftr = 16 ftAreaO r = 32 ft77

Answer 1

Question:

Solution:

According to the statement of the problem, we have that:

$r\text{ = }\sqrt[]{\frac{Area}{\pi}}$

Notice that Area = 64pi, then replacing this data into the previous equation we get:

$r\text{ = }\sqrt[]{\frac{Area}{\pi}}\text{ = }\sqrt[]{\frac{64\pi}{\pi}}\text{ = }\sqrt[]{64}\text{ = 8}$

so that, we can conclude that the correct solution is:

$r\text{ = 8}$