A family is having a pool built in their backyard. If their yard is rectangular and measures 7x by 6x and the pool is circular with a radius of 2x how much of the yard will be left over after the pool is built?
Area of a rectangular yard: A 1 = L x W = 7 x * 6 x = 42 x² Area of a pool: A 2 = r² π = ( 2 x )² π = 4 x² π A = A 1 - A 2 A = 42 x² - 4 x² π Answer: B ) 42 x² - 4 x² π
