Question

volume of a sphere
the volume of a sphere with radius ( r ) is given by the formula ( v = \frac{4}{3}pi r^3 ).
find the volume of a sphere with radius 7 cm is
use 3.14 or the ( pi ) key on your calculator.
round your answer to the nearest tenth if necessary.

Explanation:

Step1: Substitute $r=7$ into formula

$$V = \frac{4}{3} \pi (7)^3$$

Step2: Calculate $7^3$

$$7^3 = 343$$

Step3: Multiply by $\frac{4}{3}$

$$\frac{4}{3} \times 343 = \frac{1372}{3}$$

Step4: Multiply by $\pi=3.14$

$$V = \frac{1372}{3} \times 3.14 \approx 1436.0$$

Answer:

$1436.0$ cm³