Answer:
perimeter of rectangle b is 2(l+b) =2(7+2) =18 cm
perimeter of rectangle a= 4×18 =72 cm
Answer:
72 cm
Step-by-step explanation:
P=2(l+b) (perimeter of a rectangular equals the distance around )
P=2(7+2)
P=2×9
P=18
Perimeter A=4×perimeter B
4×18=72