Question

Suppose you have a rectangle with length 8 cm and width 3 cm. Now suppose the sides are doubled. Find the percent of

increase in the perimeter.

Answer 1

200%.

Explanation:

Original perimeter = 2(8 + 3) = 22 cm

After doubling each side, perimeter = 2(16+6) = 44 - that is twice the original.

Answer is 200%.