5. Graph the polar curve r = 4 + 8 cos() and find the area inside the inner loop. 6. Graph the polar curve r = 3 -6sin() and find the area inside the outer loop.7. Let r = 3 and r = 6 + 6sin(#) be two given polar curves. (a) Graph the polar curves on the same plane and shade the region inside the limacon and outside the circle. (b) Give the formula involving one or more integrals that represents the area of the shaded region in part (a)