Multiple choice

The sides of a rectangle are in the ratio 5 : 4. If the perimeter of the rectangle is 72 cm, then find its length.

  1. 40 cm

  2. 20 cm

  3. 16 cm

  4. 63 cm

  5. -
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct answer. Let the length be 5x. And let the breadth be 4x. Perimeter = 2(L + B) 72 = 2(5x + 4x) 9x = 36 x = 36/9 x = 4 Therefore, length = 5 x 4 = 20 cm Breadth = 4 x 4 = 16 cm

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