1. ## urgent

spherical brass balls of radius 6, 8 , x cms are melted and form a brass ball of

radius 27 cms . then what is x?

2. Originally Posted by bharathlece
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 $V=\frac{4}{3} \pi r^3$. 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:
$\frac{4}{3} \pi (6)^3+\frac{4}{3} \pi (8)^3+\frac{4}{3} \pi (x)^3=\frac{4}{3} \pi (27)^3$.

Solve for x.

-Dan