Question

Find the surface area and the volume of a sphereFormulasSA = 4 * 3.14 * r^2V= 4/3 * 3.14 * r^3

Answer 1

ANSWER

$\begin{gathered} SA=1017.36\operatorname{cm}^2 \\ V=3304.8\operatorname{cm}^3 \end{gathered}$

EXPLANATION

We want to find the surface area and volume of the sphere given.

The radius of the sphere is 9 cm.

To find the surface area, apply the formula:

$SA=4\cdot3.14\cdot r^2$

where r = radius

Therefore, we have that:

$\begin{gathered} SA=4\cdot3.14\cdot9^2 \\ SA=1017.36\operatorname{cm}^2 \end{gathered}$

To find the volume, apply the formula:

$V=\frac{4}{3}\cdot3.14\cdot r^3$

Therefore, we have that:

$\begin{gathered} V=\frac{4}{3}\cdot3.14\cdot9^3 \\ V=3304.8\operatorname{cm}^3 \end{gathered}$