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laila [671]
2 years ago
13

The length of a rectangle is twice its width. If the area of the rectangle is 5 , find its perimeter

Mathematics
1 answer:
gizmo_the_mogwai [7]2 years ago
4 0

Answer:

9.48

Step-by-step explanation:

The perimeter of a rectangle is the distance around the the shape. It can be found by adding each side of the shape to find a total. In contrast, the area of a shape is the amount inside a shape. It is found using multiplication or A = l*w. Since the width is w and the length is twice its width or 2w, use these expressions in the area formula to find their amount. Then add them together to find the perimeter.

A = l*w5 = w(2w)\\5 = 2w^2\\2.5 = w^2\\1.58 = w

The width of the rectangle is w = 1.58. The length is 2w = 2 (1.58) = 3.16.

Add these amounts by P = l + l + w + w to find the perimeter.

P = 3.16 + 3.16 + 1.58 + 1.58 = 9.48

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Answer:

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