Question

Question:

Answer 1

I only need help with part D

Answer 2

@mathmale can you help me? :)

Answer 3

oh you're right here :)

Answer 4

while not strictly necessary, a sketch would help in your undrstanding.
Since both of the given functions are curves, you'll have to use an "arc length" formula to calculate the length of each. Familiar with "arc length?"

Answer 5

yes its