The prime numbers have to be consecutive, (meaning in order from least to greatest), so you find 2 prime numbers on a list, and the only two are 31 and 37 so multiply those and you should get 1147
If 1 inch = 2.5 yards then x inch = 80 yards cross multiplying we have: 80 × 1 = x × 2.5 x = 80÷ 2.5 = 32 inches therefore the picnic area is 32 inches in the drawing.