You can put this solution on YOUR website! There a couple key points what you need to know before solving this problem. The first one is the area of a circle. If A is the area of a circle then:
However, that is an area of an entire circle, we only want 100/360 of a circle. Simplifying 100/360 gives you 10/36 = 5/18
So if X is the area of the shaded part of a circle then your formula is:
our r = 5, so finally
I hope this helps!
