Find the area of the region that lies inside the first curve and outside the second curve. r=13cos(theta), r=6+cos(theta)

Name the most appropriate metric unit for each measurement like a length of an carrot

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

Which image (a’ b’ c’ d’) of abcd cannot he produced using only reflections ?