Question

if the length and breadth of a rectangle are doubled.how many times the perimeter of the old rectangle will that of the new rectangle be?

Answer 1

the perimeter of new rectangle be 2 times than the perimeter of older rectangle

Answer 2

Double. This is because the shapes are similar. The length and breadth of a rectangle are directly proportional to its perimeter. In this case the constant(k) is 2. There is a direct variation. You can check this rule for any set of rectangle. It will always work.