Question

If the amount of air in a spherical balloon is 288 pi cu. in.,

what is the radius of the balloon?

Answer 1

6 inches
7.3 inches
72 inches

Answer 2

\[V=\frac{4}{3}\pi r^3\]

Answer 3

Replace V with 288 pi and solve for r

Answer 4

how

Answer 5

Multiply both sides by 3/4 and tell me what you get.

Answer 6

288*3/4 = 216

Answer 7

\[216\pi =\pi r^3\]

Answer 8

That's what you should have after you multiply both sides by 3/4

Answer 9

Now divide both sides by pi

Answer 10

What do you get?

Answer 11

63.5