Explanation:
Area is pi×r^2 and you times it by the fraction of the circle you have as its not a full circle.
So the expression is:
You can combine like terms, which are terms that contain the same variables raised to the same power. That means you can combine the two
.
The other terms can't be combined.
Your final answer should be
.
C. I, II, and III
I’m sure it’s the answer not positive though, I’m sorry.