pi*r2 = 87120 sq ft
so r2 = 87120/pi = 27731 sq ft
and then r = 166.5 ft.
Chat with our AI personalities
A circle with a radius of 30 feet has an area of 2,827.43 square feet.
A circle with a radius of 4.3 feet has an area of 58.09 square feet.
Area of circle = PI * radius^2, so PI * 6^2 = 113.09733553 square feet.
Area = pi R2 = 100 pi = 314.16 square feet (rounded)
The area is 9 feet. You find the square root of 81 which is 9. I want circumference, not area.