Question
Length and breadth of a rectangle are in the ratio 8:3.
If the perimeter of the rectangle is 42 cm more than the length of the rectangle, then find the area (in cm2) of the rectangle.Solution
Let the length and breadth of the rectangle be '3x' cm and '8x' cm, respectively. ATQ; 2 × (3x + 8x) = 42 + 8x Or, 22x = 42 + 8x Or, 14x = 42 So, x = 3 So, required area = 8x × 3x = 16 × 32 = 216 cm2
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