1- Determine a definite integral that represents the arc length of r=7cos() from = 0 to = /2.

2- Find the length of the spiraling polar curve r=2e^(3), From 0 to 2

3- Find the arc length of the polar curve described by: r=10+10cos

4- Find the exact length of the polar curve described by: r=2e^, on the interval 1/27

5- Find the length of the entire perimeter of the region inside r=7sin but outside r=2