Question

Two spherical balloons are filled with water. The first balloon has a radius of 3 cm, and the second has a radius of 6 cm.

How much more water is in the larger balloon than in the smaller balloon?
Use 3.14 to approximate pi, and express your answer in the hundredths.

Answer 1

Just find difference in volumes.

We know that volume of sphere is V = 4/3 π r³, where π = 3.14.

So volume of big balloon is 4/3 π (6)³ = 904.32

And volume of small balloon is 4/3 π (3)³ = 113.04

So larger balloon hold 904.32 - 113.04 = 791.28 cm³ more water than smaller balloon.

Answer: 791.28 cm³