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e-reader-frontend.macmillanlearning.com/?ro=macmillanlearning.com?rid=$75$ee$9$b$80$$-04$aa$-4216$$-867$e-e$9$e$0$b$10$f$68$e$3$?req_id=$13$f$486$c$2$$-619$b$-429$e... All Bookmarks $14$. Find the area of the shaded region in Figure $18$ enclosed by the circle $r=\frac{1}{2}$ and a petal of the curve $r=\cos 3\theta$. Hint: Compute the area of both the petal and the region inside the petal and outside the circle. Rogawski et al., Calculus: Early Transcendentals, $4$e, (C) $2019$ W. H. Freeman and Company FIGURE $18$ $15$. Find the area of the inner loop of the lima\c{c}on with polar equation $r=2\cos \theta-1$ (Figure $19$). $16$. Find the area of the shaded region in Figure $19$ between the inner and outer loop of the lima\c{c}on $r=2\cos \theta-1$.