Question

How do you factor `(1/3)(pi)(r^2)(h) + (1/3)(pi)(R^2)(h)`?

Answer 1

`1/3 pi h (r^2 + R^2)`

Explanation:

Separate the common factors, `1/3 , pi and h` and write the remaining terms, `r^2 and R^2` in the bracket with the correct sign in between.

`=1/3 pi h (r^2 + R^2)`