Question

How many spherical balls each of radius 1 cm can be made from a solid sphere of lead of radius 12 cm?

Answer 1

Hey there !!

Let R and r be the radius of Large spherical ball and small solid sphere respectively

Given that -

R = 12 cm

r = 1 cm

$The \: number \: of \: Spherical \: balls \: = \frac{ \frac{4}{3} \times \frac{22}{7} \times 12 }{ \frac{4}{3} \times \frac{22}{7} \times 1 } \\ \\ = 12$
Hence 12 balls can be Made

Hope this would help you !!

Answer 2

Hey there !! 

Let R and r be the radius of Large spherical ball and small solid sphere respectively 

Given that - 

R = 12 cm 

r = 1 cm 

\begin{lgathered}The \: number \: of \: Spherical \: balls \: = \frac{ \frac{4}{3} \times \frac{22}{7} \times 12 }{ \frac{4}{3} \times \frac{22}{7} \times 1 } \\ \\ = 12\end{lgathered}​ThenumberofSphericalballs=​​3​​4​​×​7​​22​​×1​​​3​​4​​×​7​​22​​×12​​​​=12​​
Hence 12 balls can be Made 

Hope this would help you !!