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kayleee321
kayleee321 kayleee321
  • 19-01-2017
  • Mathematics
Answered

The length of a rectangle is 4cm longer than the width. The perimeter is 80 cm. Find the length and width.

Verified Answer :

Anonymous Anonymous
  • 19-01-2017

Let, the width = x
Then, length = x+4

Perimeter = 2(l+w)
Substitute their values, 
80 = 2(x+4+x)
80 = 2(2x + 4)
80 = 4x + 8
4x = 72
x = 72/4
x = 18
Also, x+4 = 22

In short, Length = 22 and Width = 18

Hope this helps!

Answer Link
pouya125 pouya125
  • 19-01-2017

the lenght is 4+x and the width is x so 2((4+x)+x)=80 》4X+8=80 》X=72/4=18

Answer Link

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