An isosceles triangle has sides A, B, and C, such that sides A and B have the same length. Side C has a length of #12 # and the triangle has an area of #81 #. What are the lengths of sides A and B?
1 Answer
Mar 24, 2016
I found
Explanation:
Consider the diagram:
The Area is given as:
So:
We use half triangle and Pythagoras:
and: