Question

a cone has a height of 14 centimeters and a base with a circumference of 8.4pi centimeters. What is the volume of the cone in terms of pi?

Answer 1

Answer:

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Answer 2

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base with a circumference = 8.4 pi cm

$\bf 2\pi r = 8.4\pi$

$\bf 2r = 8.4$

$\bf r = 8.4 \div 2$

$\bf r = 4.2$

$\bf volume = \frac{1}{3} \pi {r}^{2} h$

$\bf \: = \frac{1}{3} \pi \times 4.2 \times 4.2 \times 14$

$\bf \: = 82.32\pi$