Question

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

How much greater was the volume of air in the larger ball than the smaller ball?

Use 3.14 to approximate pi. Round to the nearest hundredth if necessary.

Enter your answer in the box.

Answer 1

V = 4/3 (pi) r^3

ball with radius of 18 cm...
V = 4/3(3.14)(18^3)
V = 4/3(3.14)(5832)
V = 24429.02

ball with radius of 12...
V = 4/3(3.14)(12^3)
V = 4/3(3.14)(1728)
V = 7238.23

24429.02 - 7238.23 = 17190.79 greater <====