Using 3.14 for pi, what is the volume of a cone with a radius of 3 and a height of 8, rounded to the nearest tenth?
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Correct answer to question 193 (Mathematics Knowledge): 75.4
Method
A cone's volume is one third of pi times radius squared times height. That is 3.14 x 9 x 8 / 3, which is 75.4 rounded to the nearest tenth. Forgetting the one third gives 226.1.
Updated: November 2026
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