A landscape designer uses 8-foot timbers to form a pattern of isosceles triangles along the wall of a building. If the area of each triangle is 24 square feet, and the two equal sides are 8 feet each, what is the base?

So this is the problem:

Side A = 8 feet

Side B = 8 feet

Side C = X

Area = 24 square feet

Could someone answer this and explain how the answer was found?

I'm currently studying modeling with Linear and Quadratic Functions if that helps.