Question

The circumference of a lacrosse ball is 8 in. Find its volume to the nearest tenth of a cubic inch.

Answer 1

V = 8.6 in^3

Explanation:

The circumference is given by

C = 2 * pi *r

8 = 2 * pi *r

Divide each side by 2pi

8 /2pi = r

Using 3.14 for pi

1.27388535 = r

The volume of a sphere is given by

V = 4/3 pi r^3

V = 4/3 (3.14) (1.27388535)^3

V =8.654847391

To the nearest tenth

V = 8.6 in^3