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The formula for perimeter is p = 2 l + 2 w. If the perimeter p of a rectangle is 200 mm (millimeters) and the width w = 30 mm, what is l? A. 60mm B. 140mm C. 70mm D. 100mm
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The formula for perimeter is p = 2 l + 2 w. If the perimeter p of a rectangle is 200 mm (millimeters) and the width w = 30 mm, what is l?

A. 60mm
B. 140mm
C. 70mm
D. 100mm

User Huang
by
8.2k points

1 Answer

2 votes
Plug the known variables into the equation.
p=2l+2w
200=2l+2(30)
200=2l+60
140=2l
l=70
The answer is C. 70mm.
User KidneyChris
by
8.8k points
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