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The length of a rectangle is x units and the width is x-5. How do I find an equation for the perimeter and area of the rectangle?
For the perimeter, add the four sides together and simplify. For the area, multiply the length by the width.
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If given area and length of a rectangle, how do I find the perimeter?
Divide the area by the length, giving you the width. Add twice the width to twice the length.
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The perimeter of a rectangle is 64 feet. Length is 7 feet less than 2 times the width. What are the dimensions of the rectangle?
Let x = the width. Then the length is 2x - 7. The perimeter is twice the width plus twice the length: 64 = (2x) + 2(2x - 7) =...
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How do I find the perimeter of a regular polygon with one side being 5-2x and another being -4x+9?
Since a regular polygon has congruent sides (every side is equal to each other) you set up the equation 5-2x = -4x+9 then you solve for "x". After solving for...
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A rectangle with diagonal of 20 cm has sides in the ratio 2:1. How do I find the area of rectangle?
Such a rectangle would have its sides and diagonal in the ratio of 2:1:√5 (per the Pythagorean theorem). The ratio of √5 to the diagonal (20) is equal to the...
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If the side = 48 meters and the diagonal = 50 meters, how do I find the area of the rectangle?
Let s be the shorter side. Then (by the Pythagorean Theorem) s² + 48² = 50². So s² + 2304 = 2500. Then s² = 196, and s = 14...
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How do I find the perimeter of a pentagon when I'm only given the apothem?
The perimeter of a regular pentagon is the apothem multiplied by 7.267.
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The diagonal of a rectangle is 25 cm. If one of the rectangle's sides is 15 cm, how do I calculate the area?
Use the Pythagorean Theorem to find the other side. Then multiply the length by the width.
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The length of a rectangle field is twice its breadth. Its perimeter is 400m. How do I find the length and breadth?
Let B equal the breadth. Then 2B equals the length. Write an equation in B, stating that the perimeter is equal to twice the breadth plus twice the length. Solve...
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How do I find the area of a rectangle if width and perimeter are given?
Double the width, and subtract that from the perimeter. Then divide that number by two, which gives you the length of the rectangle. Then, multiply the result by the width...
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