SOLUTION: a cyclic quadrilateral has the sides AB=10 and CD= 12 cm respectively. the 4rth side DA is the diameter of the circle. Find the area of the circle?

Algebra ->  Circles -> SOLUTION: a cyclic quadrilateral has the sides AB=10 and CD= 12 cm respectively. the 4rth side DA is the diameter of the circle. Find the area of the circle?      Log On


   

Question 21780: a cyclic quadrilateral has the sides AB=10 and CD= 12 cm respectively. the 4rth side DA is the diameter of the circle. Find the area of the circle?
Answer by Paul(988) About Me  (Show Source):
You can put this solution on YOUR website!
The diameter can be determined by the Pythagorean Theorem
10%5E2%2B12%5E2=hyp
hyp=15.6
Radius = 7.8
%28pi%29%2Ar%5E2
%28pi%29%2A7.8%5E2
%28pi%29%2A60.84
=191.0376
Hence, the area for the circle is 191+cm%5E2