I was wondering if anyone could help me find the perimeter and area of a 54 degree annular sector with inner radius of 20 and outer radius of 30. This is what I got so far:
I supposed area = area of outer circle-area of inner circle so I used A=pi times 30 to the power of 2 and then pi times 20 to the power of 2 which gave me 500pi.
Then, I got 56/360= x/500pi which gave me 100pi square units.
So, my question is, am I on the right track or not? If not, what should I do? Also, how do I find the perimeter?
Thanks for your time.