Area of Semi-Circle region from Chord
I would like to know how I am supposed to approach this problem.
A small semi-circle is inserted into a bigger one.
The only measurement that I have been given is that chord WX = 36mm, and is parallel to diameter YZ.
I need to find the area of the grey area, and I am completely stuck for any idea on how to tackle this with only the one measurement.
p.s. The diameter of the smaller semi-circle is not necessarily half the diameter of the larger one.
Thanks if anyone can help.