SOLUTION: the width of a rectangle is fixed at 24 cm. what lengths will make the perimeter greater than 84 cm?

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Question 245920: the width of a rectangle is fixed at 24 cm. what lengths will make the perimeter greater than 84 cm?
Answer by richwmiller(9135) About Me  (Show Source):
You can put this solution on YOUR website!
perimeter =2L+2W
84=2L+2(24)
84=2L+48
36=2L
L=18
check
84=2(18)+2(24)
84=36+48
84=84 ok
if The length is more than 18 cm. then the perimeter will exceed 84 cm.