○=> Correct option :
○=> Steps to derive correct option :
Length of side of patio A = 12 yards
Area of patio A which is a square :
Thus, Area of patio A = 144 yards²
Length of side of patio B = 6.1 yards
Area of patio B which is a square :
Length of side of the second patio B = 6.1 yards
Area of this patio :
Total area of Patio B :
= Area of first patio B + Area of second patio B
Thus :
▪︎Area of patio A = 144 yards²
▪︎Area of patio B = 74.42 yards²
▪︎Therefore, the correct option is (a) 74.42