2007-07-11 09:58:16 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
radius = .5 diameter
radius = .5 x 20 yd
radius = 10 yd
area = pi r²
area = pi (10 yd)²
area = pi 100 yd²
area = 100pi yd²
2007-07-11 10:13:17 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The formula for the area of a circle is pi*r^2
If the diameter is 20 yards, that means the radius is 10
So pi * 10^2 = 100*pi
2007-07-11 10:01:25 · answer #2 · answered by andrek 1 · 1⤊ 1⤋
r = 10 yd
A = π x 10² yd²
A = 314 yd²
2007-07-11 10:30:27 · answer #3 · answered by Como 7 · 0⤊ 0⤋
A=(pi)r^2
pi=3.14 d=20
r=1/2d=10
A=3.14 * 10^2 = 314*
*If you have the pi key on your caluculator, its 314.16 square yards
2007-07-11 10:02:56 · answer #4 · answered by Alexis P 2 · 1⤊ 0⤋
A = x * sqrt(20^2 - x^2)
2016-05-19 22:15:01 · answer #5 · answered by ? 3 · 0⤊ 0⤋
3.14 x 10 x 10 = 314 square yards (2,826ft²)
2007-07-11 10:22:02 · answer #6 · answered by Norrie 7 · 0⤊ 0⤋
314.15926 square yds
2007-07-11 10:03:35 · answer #7 · answered by jonboy2five 4 · 1⤊ 0⤋