In this problem we have to multiply the fractions, because it says that of the animals are birds, and from that fraction are birds of prey. In other words, of are birds of the prey. One strategy to solve this quickly is remembering that "of" is translated into math language as multiplication, so:
Therefore, of the total birds, are birds of the prey.
Since a square's sides are all equal to each other you can use this formula for finding the area of a rectangle which is Base x Height orsince all the sides are equal to each other you can just square the one side to get the desired answer!