john349 john349

02-10-2017
Mathematics

contestada

The length of a rectangle is four times its width. If the area of the rectangle is 400 cm squared, find its perimeter

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scienceSmarite12 scienceSmarite12

02-10-2017

Length=x
Width=4x
4x•x=400 sq cm
x= 10 cm
4x= 40 cm
P=2•10cm+2•40 cm
=100 cm

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