Question

The ratio of the side length of Square A to the side length of Square B is 4:9. The side length of Square A is 12 yards. What is the perimeter of Square B?

Answer 1

A/B : 4/9 = 12/B
         cross multiply
         (4)(B) = (9)(12)
         4B = 108
         B = 108/4
         B = 27

P = 4a...where a is the length of one side
P = 4(27)
P = 108 yds <=== perimeter of square B