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The perimeter of a parallelogram is 72 cm.
One side is twice as long as the adjacent side.
Find the length of the longer side (in cm).

Class 8Properties of ParallelogramsQuadrilaterals

A48
B26
C24
D22

Step-by-Step Solution

Let shorter =

a

, longer =

2 a

. Perimeter =

2 (a + 2 a) = 6 a = 72

, so

a = 12

. Longer side =

2 a = 24

cm.

Answer: C) 24

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