Question

Can a radical ever be rational?

Answer 1

A radical can some times be a rational dependes on the numbers

Answer 2

Sure. Here's an example.

$\sqrt{\dfrac{49}{81}}=\dfrac{7}{9}$

Another one might look like this.$\sqrt[4]{16} = 2$

And just one more

$\sqrt[3]{8000} = 20$