Question

The base of an isosceles triangle is 18cm and it's area is 108cm^2.Find it's perimeter.
Use the following formula to solve:
Area=
$area = \frac{1}{4}b \sqrt{4a {}^{2} - b {}^{2} }$

Please answer. I will mark it as the brainliest answer

Answer 1

hope it helps u bcz it is easy than that isosceles area formula