A rectangle has a width of 5 meters and a length of 7 meters a similar rectangle has a width of 15 meters what is the length of the similar rectangle?

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31-01-2018
Mathematics

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A rectangle has a width of 5 meters and a length of 7 meters a similar rectangle has a width of 15 meters what is the length of the similar rectangle?

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kitapla kitapla · Answer 1 · 2018-01-31T09:49:59+01:00

kitapla kitapla

31-01-2018

Similar rectangles have or form similar ratios. Hence to solve this, you have to get the ratio of the measurements:
Let N be the length of the similar rectangle
5/7 = 15/N
5(N) = 7(15) -> cross multiply
5N = 105
5N/5 = 105/5 -> divide both sides of the equation by 5
N = 21
Therefore, 21 meters in the length of the similar rectangle
To check -
5/7 = 15/21 (cross multiply)
105 = 105

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