Question

Find the volume of the surface area of the sphere below. use Pi in the calculator. include the appropriate units and round to the nearest hundredth if necessary. where V=(2/3)3.14*R^3 and SA=(3)3.14*R^2

Answer 1

Substituting the radius of the sphere into the formula of the volume and also into the formula of the surface area we get:

$\begin{gathered} V=\frac{2}{3}\cdot(3.14)\cdot(3km)^3=\text{ 2}\cdot9\cdot3.14km^{3\text{ }}=56.52km^3 \\ SA=3\cdot(3.14)\cdot(3km)^2=\text{ 27}\cdot3.14km^2=84.78km^2 \end{gathered}$