Question

Suppose a coffee cup has a diameter of 8cm and a height of 9cm. What is the volume of the cup ? (to the nearest whole number)

A) 81 cm^3
B) 226 cm^3
C) 452 cm^3
D) 1018 cm^3

Answer 1

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Answer 2

452 cm^3

Explanation:

The volume of a cilinder is
`\pi (radius^(2))(height)`

The diameter of the cup is 8cm, the formula of the radius is
`(diameter)/(2)`

So the radius would be
`(8)/(2)` = 4cm

We change variables in the formula of the volume
`\pi(4^(2))(9)` = 144
`\pi` = 452cm^3