Question

answer the above question with steps​

Answer 1

Answer:

12 cm

Step-by-step explanation:

Volume of new solid =

$\frac{4}{3}* \pi * 3^{3} + \frac{4}{3}* \pi * 4^{3} + \frac{4}{3}* \pi * 5^{3}$

$\\= \frac{4}{3}* \pi * [3^{3} + 4^{3} + 5^{3}]$

$\\= \frac{4}{3}* \pi * [216]$

$r^{3} = 216$

$r = 6$

radius = 6 cm

Diameter = 12 cm

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Answer 2

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