Question

Janine inflated a ball to a radius of 18 cm and another ball to a radius of 12 cm.

Answer 1

The answer is 17,182.08 cm³
 
To calculate this we need to calculate the volume of each ball V2 - V1 = ?
The volume of a sphere with radius r is:
V = 4/3 π r³

Ball 1:
r1 = 18 cm
V1 = 4/3 * 3.14 * 18³
V1 = 24,416.64 cm³


Ball 2:
r2 = 12 cm
V2 = 4/3 * 3.14 * 12³
V2 = 7,234.56 cm³

How much more water is in the larger balloon than in the smaller balloon:
V2 - V1 = 24,416.64 cm³ - 7234.56 cm³
             = 17,182.08 cm³

Hope this helps!

Answer 2

Answer: 17,182.08cm³