Lexilex2005 Lexilex2005
  • 17-01-2020
  • Mathematics
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The perimeter of a rectangle is 63cm. The length is 4cm more than its width. Find the dimensions of the rectangle

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andreamilosevic01
andreamilosevic01 andreamilosevic01
  • 17-01-2020

O=63cm

a=b+4

O=2a+2b

O=2(b+4)+2b

O=2b+8+2b

63=4b+8

4b=63-8

4b=55

b=55/4=13.75

a=13.75+4=17.75

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