This math skill teaches how to determine the width and height of a rectangle when given its perimeter and the ratio of its sides. Using the formula for perimeter and the side ratio, you solve for one side and then find the other.
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Side of a rectangle from its perimeter and side ratio
Test your understanding of rectangle side from perimeter and ratio by practicing it! Work through the below exercises to use it in practice.
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Let's find the width and height of this rectangle, given its perimeter and the ratio between height and width
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We know that perimeter is twice the sum of width plus height
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We can plug in our numbers, and use twice height as our width
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So the perimeter, 24, is equal to 6 times the height
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Which means our height is 4
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And our width, which is twice that, is 8