I need help with these questions

(a) Graph the circles :22 + y2 = 1 and (m 1)2 + y2 = 1, convert these equations to polar coordinates, and nd the points (in polar coordinates) where these circles intersect. (b) Shade in the region of intersection that is in both circles. This shape is called a lens. Calculate the area of the lens. (Hint: Split the region into three parts. You can use symmetry to cut this down to two calculations.) (c) Now shade in the region that is outside of the rst circle but inside the second. This shape is called a lune. Calculate the area of this lune