If the length of a rectangle is increased by 5%, then its area will in

1.	If the length of a rectangle is increased by 5%, then its area will increase by: 1. 10%2. 5%3. 7.5%4. 25%
Answer» Correct Answer - Option 2 : 5% Formula used: Area of rectangle = length × breadth Calculation: Let the length and breadth of a rectangle be l and b respectively Initial area of rectangle = l × b New length = l + 5% of l = 1.05 l New area of rectangle = 1.05 l × b Increase in area = (1.05 l × b) – (l × b) = 0.05 × l × b Percentage increase = (0.05 × l × b)/(l × b) × 100 = 5% ∴ The area of rectangle will increase by 5%

If the length of a rectangle is increased by 5%, then its area will increase by: 1. 10%2. 5%3. 7.5%4. 25%

Answer» Correct Answer - Option 2 : 5%

Formula used:

Area of rectangle = length × breadth

Calculation:

Let the length and breadth of a rectangle be l and b respectively

Initial area of rectangle = l × b

New length = l + 5% of l = 1.05 l

New area of rectangle = 1.05 l × b

Increase in area = (1.05 l × b) – (l × b) = 0.05 × l × b

Percentage increase = (0.05 × l × b)/(l × b) × 100 = 5%

∴ The area of rectangle will increase by 5%

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If the length of a rectangle is increased by 5%, then its area will increase by: 1. 10%2. 5%3. 7.5%4. 25%

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