spherical brass balls of radius 6, 8 , x cms are melted and form a brass ball of
radius 27 cms . then what is x?
For a sphere $\displaystyle V=\frac{4}{3} \pi r^3$. You can write an expression for the total volume of the three spheres, since volumes simply add, then equate that to an expression for the volume of a single sphere:Originally Posted by bharathlece
$\displaystyle \frac{4}{3} \pi (6)^3+\frac{4}{3} \pi (8)^3+\frac{4}{3} \pi (x)^3=\frac{4}{3} \pi (27)^3$.
Solve for x.
-Dan