john349 john349

02-10-2017
Mathematics

contestada

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

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HannahVance99 HannahVance99

02-10-2017

If width of rectangle is a, then length is 4a and area = 4a2 which is given as 100 m2. So a=5. Perimeter of rectangle= a+a+4a+4a = 10a= 50m

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