Question

If the area of circular pond is 169pi square metres,find the radius of its base.​

Answer 1

The radius of its base is 13.

Explanation:

`A = \pi r^(2) \\169\pi = \pi r^(2) \\\\(169\pi)/(\pi) = (\pi r^(2))/(\pi) \\169 = r^(2)\\√(169) = r\\ 13 = r`