
William B. answered 01/15/15
Tutor
New to Wyzant
Patient, Engineer/Biotech for Math, Microsoft Excel, Word Process
radius (r)
diameter (d)
For a circle such as the top of the cake r = 1/2 d = 1/2 x 12 in = 6 in
So r = 6 in
The area of the top of the cake = pi r2 = 3.14 x 62 in = 3.14 x 36 in2 = 113 in2
So to get 8 pieces of the same area, simply divide the area by 8 pieces
113 in2 / 8 pieces = 14.125 in2 per piece