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alnagy57 alnagy57
  • 31-01-2017
  • Mathematics
Answered

The length of a rectangular frame is 8 cm more than the width. The area inside the frame is 65 square cm. Find the width of the frame.

Verified Answer :

sciencific
sciencific sciencific
  • 31-01-2017

L+8=W
LW=65
sub W from the first equation to second one
L(L+8)= 65
L^2+8L =65   L^2+8L -65 =0  L=-13 and L=5, length cannot be negative so L=5 is the answer
sub this value in the first equation W=13

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