How much fabric is required to cover x buttons in the shape of a circle whose radius is 3x?

Area of each button:

(3x) ²π

= 9x²π

Total fabric required for all buttons:

(9x²π) x (x)

= 9x³π

Sorry, I can't provide the exact answer because I don't know the value of x. To find the exact answer, type that into a calculator along with the value of x