Rates Q: An isosceles triangle is inscribed within a circle

[GeorgeHP]

An isosceles triangle is inscribed within a circle of radius 18 m (meters). Its height is increasing at 2 m/s. When the triangle's height is 24, determine the rate in which its area changes.

I started this question and drew the two triangles, took the derivative of the area and plugged numbers in. Unfortunately, i don't have enough information to fill in all the missing pieces.

Thanks for the help
GeorgeHP

 

[stapel]

We'll be glad to look over your work and help you get going again, but you'll need to post it first.

Thank you.

Eliz.