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Art [367]
3 years ago
14

The length of a rectangular frame is 5 cm more than the width. The area inside the frame is 66 square cm. Find the width of the

frame.
Mathematics
1 answer:
Ratling [72]3 years ago
6 0
For this case we have that the area is given by:
 A = (w) * (l)
 Where,
 w: width
 l: long
 Substituting we have:
 66 = (w) * (w + 5)
 Rewriting
 w ^ 2 + 5w - 66 = 0
 (w + 11) * (w-6) = 0
 Using the positive root we have:
 w = 6
 Answer:
 
the width of the frame is:
 
w = 6 cm
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