Question

It height of a bright circular cone
is 9 cm and its volume is 48 pie cm cube.find the diameter of cone?​

Answer 1

Step-by-step explanation:

$vol \: = \: \frac{1}{3} \pi {r}^{2}h \\ 48\pi = \frac{1}{3} \pi {r}^{2} \times 9 \\ \\ \frac{48\pi}{9\pi} = \frac{1}{3} {r}^{2} \\ \\ {r}^{2} = \frac{48 \times 3}{9} \\ \\ {r}^{2} = 16 \\ r = 4 \\ d = 2r = 8$

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