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The perimeter of a rectangle is 28 cm. The length is 10 cm longer than the width. Find the dimensions

 Apr 1, 2020
 #1
avatar+1956 
+3

x=length

y=width

 

2x+2y=28

x=y+10

 

Elimination method

 

2x+2y=28

2x-2y=20

 

4y=8

y=2

 

Length: 12cm, Width: 2cm

 Apr 1, 2020
 #2
avatar+23562 
+2

Similarly :

w = width

l = length = 10+w        perimeter = 28

2w + 2(10+w) = 28

4w = 8   so    w = 2 cm      then    l = 12 cm

 Apr 1, 2020

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