Question

Four students each calculated the volume of a sphere with a radius of 9 centimeters and they got four different answers.

Han thinks it is 108 cubic centimeters.

Jada got  108pi cubic centimeters.

Tyler calculated 972 cubic centimeters.

Mai says it is  972pi cubic centimeters.

Do you agree with any of them? Explain your reasoning.

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Answer 1

Mai is correct

Explanation:

The volume (V) of a sphere is calculated as

V =
`(4)/(3)`πr³ ( where r is the radius )

Here r = 9, thus

V =
`(4)/(3)`π × 9³

=
`(4)/(3)`π × 729 ( cancel 3 and 729 )

= 4π × 243

= 972π cm³ ← The result Mai got