How do we solve this?

It asks for partial derivative, and you have to derive it with respect to 'y' variable.

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

i believe the answer is d.

hope it you! : d