Here we can use fact than we can multiply fraction by inverse of fraction instead of dividing it.
Inverse of 1/3 is 3/1
Lets multiply it

- its our result
got u
Step-by-step explanation:
the answer is 10x+20
Here is the equation to find that answer A=bh+2ls+ib i got it off line if its not right im sory
R = 60
60^2 * pi = 3600 * pi
angle = 30°
3600pi / 30 = 120pi
the answer is 120 * pi