Grade 8 Math Sample Question 9

What is the volume of a cone with the height of 6 inches and the
diameter of 4 inches?

A) 25.20in³

B) 25.12in³ (Correct Answer)

C) 26in³

D) 25in³

Explanation:
The equation for the volume of a cone is V = ? x r² x h / 3. ‘r’ is determined
by D/2, which is: 4cm / 2 = 2cm, insert the value of ‘r’ we have:

V = 3.14 x 2² x 6 / 3

V = 75.36 / 3 = 25.12 cubic inches

Related Common Core State Standard: Geometry 8.G.9

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