Surface area of a sphere = 4πr2
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Surface area of a sphere = 4 x (pi) x (radius)2
153.9 units squared.
4(pi)r^2 (4 * pi * r^2)
The formula for the surface area of a sphere is: 4 pi r 2
How do you find the suface area of a net? Answer: Do the formula for each shape that is in the net.