One dimension of a rectangular map is 8 inches and the perimeter is 40 inches. What is the other dimension of the map?

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spencerphillip spencerphillip

22-06-2016
Mathematics

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One dimension of a rectangular map is 8 inches and the perimeter is 40 inches. What is the other dimension of the map?

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meerkat18 meerkat18 · Answer 1 · 2016-06-30T01:57:15+02:00

In a rectangular figure, the opposite sides should be equal. If one of the sides measures 8 inches, the side opposite to this should also be 8 inches. We let x be the other dimension. The perimeter (P) is equal to,
P = 2 x 8 + 2x
Substituting the known values,
40 in = 16 + 2x
Solving for x gives an answer of 12 in. Thus, the other dimension is 12 inches.