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A rectangle has a length of 18 cm and a perimeter of 68 cm. Which equation could be used to find the width of the rectangle? A. w + 18 = 68 B. 18w = 68 C. 2w + 18 = 68 D. 2w + 36 = 68
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A rectangle has a length of 18 cm and a perimeter of 68 cm.

Which equation could be used to find the width of the rectangle?

A. w + 18 = 68

B. 18w = 68

C. 2w + 18 = 68

D. 2w + 36 = 68

User Pkh
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1 Answer

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Well perimeter can be found with the equation P = 2w + 2l where p is perimeter, l is length and w is width. Substitute 18 in for l and 68 for p:
2w + 2(18) = 68
D. 2w + 36 = 68 is the equation.
User Raggaer
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