The answer is C. 89 in^2
This is found by (1/2([tex] \pi r^{2} [/tex]))+70
r in this equation stands for radius which is half the diameter. Sice the diameter equals 7, the radius equals 3.5
You have to solve this by putting it into a calculator since you can't really solve for an equation with pi in it otherwise.
Hope this helps!
