16 ft. (d = 2r)
Radius of a circle = 1/2 of the diameter.Area of a circle = (pi) x (radius)2For the diameter of 16-ft, radius = 8-ft, and area = (pi) (8)2 = 201.062 square feet (rounded)
Twice as big which will be 16 ft
It is 8*pi = 25.13 ft, approx.
4 ft.
2 x pi x 8 ft = 50.265 ft
the questions is asking you to find the area, so the area of a circle is 3.14r^2. Plug 8ft for radius and you get your answer to be approximately 201.06 sq ft
The area of a circle is pi*(radius)^2. If the 8 ft is the diameter, the area is pi*(4 ft)^2~=50.27 ft^2 (ft^2 is square feet)
It is 4/pi = 1.27 ft, approx.
If radius=21 ft, then diameter = 2*radius = 42 ft
circle with radius with 22yd
If you meant: How does one measure the area of a circle in Sqft, The formula is: Pi x Radius in Ft squared. i.e. Area of circle in SqFt. =(22/7) x Radius in Ft x Radius in Ft.