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ehidna [41]
4 years ago
7

A rectangle has a perimeter 86 cm and length 36 cm what is its width

Mathematics
2 answers:
Pani-rosa [81]4 years ago
6 0

Answer: w = 7cm


Step-by-step explanation:

Perimeter = 2 x length + 2 x width  = 2L  + 2w

 

 Width is 4 cm less than the length, so w = L-4

 

  36 = 2L + 2(L-4)

 

 36 = 2L + 2L - 8

 

 36 = 4L - 8

 

44 = 4L

 

 L = 11

 

w = 7

 

2(11) + 2(7) = 22 + 14 = 36

 

Length is 11, width is 7

sashaice [31]4 years ago
4 0

Answer:

7cm

Step-by-step explanation:

36x2= 72

86-72= 14

14/2= 7

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