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A rectangle whose length is 5 cm less than twice its breadth if the length is decreased by 5 cm a visit is increased by 2 cm the perimeter of the resulting rectangle will be 74 cm find the length and the width of the original rectangle |
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Answer» Let width of rectangle be W ∴ length would be L=2W−5 If the length is decreased by 5cm, then new L1=2W−10cm and width is increased by 2cm, new width W1=W+2cm Given, Perimeter =74cm =>2(2W−10+W+2)=74 =>3W−8=37 =>3W=45 =>W=15cm =>L=2W−5=2(15)−5=25cm |
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