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23 September, 12:40

If the length of the base of a rectangle is increased by 20 percent and the length of the altitude is increased by 30 percent, by what percentage is the area increased?

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  1. 23 September, 12:47
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    L*b becomes (1.2) * (1.3) * l*b=1.56 l*b

    so, 56% increase
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