posted by Sara .
Susan's back yard is rectangular with dimensions 39 yd. by 71 yd. Carlos's back yard is rectangular with dimensions 30 yd. by 50 yd. How much larger is the area of Susan's back yard than the area of Clarlos's back yard?
39 * 71 - 30 * 50 = 2769 - 1500 = 1269 yd ^ 2