Question

the length and width of a rectangale are in ratio 5:3.Find the dimensions of the rectangle,if it's perimeter is 112cm ​

Answer 1

Answer:

Let the length and breadth of a rectangle are in ratio 5 : 3 be 5x and 3x.

ATQ,

perimeter = 2( l + b)

112 = 2 ( 5x + 3x )

112 = 2 ( 8x )

112 = 16 x

112/16 = x

7 = x

therefore, length = 5x = 5 × 7 = 15cm

width = 3x = 3 × 7 = 21cm

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