Posted by Anonymous on Tuesday, March 6, 2012 at 8:41pm.
A hot air balloon is in the shape of a sphere. Approximately how much fabric was used to construct the balloon if its diameter is 32 feet? Use 3.14 for . Round to the nearest hundred square feet.

geometry  Damon, Tuesday, March 6, 2012 at 8:54pm
area of sphere = 4 pi r^2
here r = 16 ft
A = 4 * 3.14 * 256