The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:40 %42 %44 %48 %
Question
The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:
- 40 %
- 42 %
- 44 %
- 48 %
Solution
The area of a rectangle is calculated by multiplying its length by its width. If each side is increased by 20%, the new length will be 1.2 times the original length and the new width will be 1.2 times the original width.
So, the new area will be (1.2 * original length) * (1.2 * original width) = 1.44 * original area.
The increase in area is therefore 1.44 - 1 = 0.44 or 44%.
So, the percentage increase in the area of the rectangle is 44%.
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