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6 June, 01:39

A rectangle is 12 feet long and 5 feet wide. If the length of the rectangle is increased by 25% and the width is decreased by 20%

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  1. 6 June, 01:59
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    30 square feet.

    Step-by-step explanation:

    We have to find the main area of the rectangle to determine the changes.

    We know, Area of a rectangle = Length * Width

    Given,

    Length = 12 feet

    Width = 5 feet

    Therefore, the area of the rectangle = (12 * 5) Square feet.

    The area of the rectangle = 60 square feet.

    Now, if the length of the rectangle increased by 25%, the new length would be = 12 feet (12 feet * 25%) = 12 feet + 3 feet = 15 feet.

    If the width increased by 20%, the latest width would be = 5 feet + (5 feet * 20%) = 5 feet + 1 foot = 6 feet.

    The new area of that rectangle = (15 * 6) square feet = 90 square feet.

    The changes of area from the previous rectangle is = (90 - 60) square feet = 30 square feet.
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