nelsongra nelsongra
  • 09-06-2017
  • Mathematics
contestada

A rectangle's length and width are in a ratio of 9:2. The perimeter is 66 inches. What are the length and width?

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mreijepatmat
mreijepatmat mreijepatmat
  • 09-06-2017
Perimeter of rectangle 2(L + W)

But we are given L/W  = 9/2 , & W =2L/9

Perimeter of rectangle 2(L + W) =  2(L + 2L/9) =66 in
= 2L+4L/9 = 66 in (same denominator, L = 594/27 or L=22 in and W = 11

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