Question

The perimeter of Rectangle A is four times that of Rectangle B. Rectangle B is

7 cm long and 2 cm wide. Given that Rectangle A and Rectangle B are similar,
what is the perimeter of Rectangle A?

Answer 1

perimeter of rectangle b is 2(l+b) =2(7+2) =18 cm

perimeter of rectangle a= 4×18 =72 cm

Answer 2

72 cm

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