## anonymous 4 years ago Help Needed! Find the area of each of the following shaded parts. Assume all arcs are circular. Leave all answers in terms of pi.

1. anonymous

2. campbell_st

the area of the large semi-circle is $A = 1/2 \pi r^2$ the 2 small semi-circles has the same radius r/2 and combined have the area of a whole circle $A=\pi (r/2)^2 = 1/4 \pi r^2$

3. anonymous

Are of each part is: $1/2(1/2\pi r ^{2})$

4. anonymous

So would the answer be $A= 1/4\pi r ^{2}$ ?

5. anonymous

yes

6. campbell_st

the green shaded area is A = 1/4 pi r^2 that appears to be the only area you need to find

7. anonymous

yes, just the shaded portion. Thank you both for helping me!