Respuesta :

To find area of a circle, one must perform the equation "pi(r)^2" we have all information but the radius which has become inclusive in the question. To draw out the radius, all you gotta do is defuse 64 into its square root-8. The radius is 8.
calculista

we know that

The area of the circle is equal to

[tex]A=\pi r^{2}[/tex]

where

r is the radius of the circle

In this problem we have

[tex]A=64\pi \ ft^{2}[/tex]

substitute in the formula and solve for r

[tex]64\pi=\pi r^{2}[/tex]

Simplify

[tex]64=r^{2}[/tex]

Square root both sides

[tex]r=8\ ft[/tex]

therefore

the answer is

The value of r is [tex]8\ ft[/tex]

Otras preguntas