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What is the formula to find a length that is twice as much as the width that gives you a certain area?
Wiki User
∙ 16y ago
The formula for Area is A = L x W. To solve the above problem, let X represent the width and 2X represent the length. Use the formula to find the value of X: A = 2X x X. Since the "certain area" is known, use that number as A (we'll use 200 sq ft as an example): 200 = 2X x X; rewrite as 200 = 2X-squared; next, divide both sides of the equation by 2: 100 = X-squared; find the square root of 100 to find the value of X; now the equation is 10 = X. Remember X represents the width, so the width is 10. The length is twice the width, so 10 x 2 = 20.
Wiki User
∙ 16y ago
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