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A rectangle has 4 sides.

Let the width of the rectangle be y.

As the length of the rectangle is twice its width, it is 2y.

The sum of the 2 sides that are the width: 2 * y = 2y

The sum of the 2 sides that are the length: 2y * 2 = 4y

The perimeter equals the 2 widths and the 2 breadths: 2y + 4y = 6y

The perimeter: 6y = 60 cm

So: y = 10 cm

The length is 2y = 2 * 10 cm = 20 cm

Answer: 20 cm

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βˆ™ 14y ago
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Wiki User

βˆ™ 10y ago

A=392

2x2=392

x2=196

x=14

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Anonymous

Lvl 1
βˆ™ 4y ago

50

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Q: What is the length of a rectangle that has area of 392 sq cm and a length twice the width?
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