Question

Janine inflated 1 ball to a radius of 18 cm and another ball with a radius of 12 cm. how much more air was in the larger ball? use 3.14 to approximate pi and express your answer in hundredths

Answer 1

Janine inflated a ball with a radius of 18 cm.
The volume of that ball will be
Volume = 4 / 3 * pi * r^3
Volume = 4 / 3 * 3.14 * 18^3
Volume = 24416.64 cm^3

Janine inflated another ball with a radius of 12 cm.
The volume of that ball will be
Volume = 4 / 3 * pi * r^3
Volume = 4 / 3 * 3.14 * 12^3
Volume = 7234.56 cm^3

Difference = 24416.64 cm^3 - 7234.56 cm^3
Difference = 17,182.08 cm^3