Question

the adjacent sides of a parallelogram iate in the ratio 5:3 if the longer of the two sides is 7.5cm find the perimeter of parallelogram
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Answer 1

Solution :

Let, the multiple of ratio be x

length of big sides = 7.5cm

⇒ 5x = 7.5cm

⇒ x = 7.5cm/5

⇒ x = 1.5cm

Perimeter = 2 ( a + b )

⇒ Perimeter = 2 ( 7.5cm + 3 × 1.5cm )

⇒ Perimeter = 2 ( 7.5cm + 4.5cm )

⇒ Perimeter = 2 × 12cm

⇒ Perimeter = 24cm