## Prealgebra (7th Edition)

$A=4\times5^2\pi=100\pi\approx100\times \frac{22}{7}=\frac{2200}{7}\approx 314.2857$ square in. $V=\frac{4}{3}\times5^3\pi=\frac{500}{3}\pi\approx 500\times\frac{22}{7}=\frac{11000}{7}\approx 1571.42857$ cubic in.
The volume of a sphere can be calculated as: $V=\frac{4}{3}r^3\pi$ Here: $d=10$ in $r=\frac{d}{2}=5$ in $V=\frac{4}{3}\times5^3\pi=\frac{500}{3}\pi\approx 500\times\frac{22}{7}=\frac{11000}{7}\approx 1571.42857$ cubic in. The surface area of a sphere can be calculated as: $A=4\pi r^2$ Here: $A=4\times5^2\pi=100\pi\approx100\times \frac{22}{7}=\frac{2200}{7}\approx 314.2857$ square in.