agarwalmeena200
agarwalmeena200 agarwalmeena200
  • 04-01-2019
  • Mathematics
contestada

Length of a rectangle is four times its width. If the perimeter is 100 m, what is the area in square cm?


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offguard
offguard offguard
  • 04-01-2019

Set the width to be x. Thus, the length is 4x.

The perimeter is 2(x+4x)=100, so x=10.

Plugging in x=10, you get that 4x=40.

So, the area of the rectangle is 400 [tex]m^2[/tex].

Because there are 100 centimeters in a meter and you are asking for area, you must multiply by [tex]100^2[/tex] to get 4000000 [tex]cm^2[/tex].


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