the length of a rectangle is four times its width. if the area of the rectangles is 100 ft sfind its perimeter

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asked Oct 14, 2016 168k views

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the length of a rectangle is four times its width. if the area of the rectangles is 100 ft sfind its perimeter

Mathematics
high-school

Dabrule asked

by Dabrule

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$length=4width\\\\ Area=length*width\\\\ 100=width*4width \ \ \ | divide\ by\ 4\\\\ 25=width^2\ \ \ | sqrt{}\\\\ width=5ft\\ length=4*5=20ft\\\\ Perimeter=2width+2length\\\\Perimeter=2*5+2*20=10+40=50ft$

Nachime answered Oct 20, 2016

by Nachime

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