हिंदी

A thin wire 20 centimeters long is formed into a rectangle. If the width of this rectangle is 4 centimeters, what is its length?

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प्रश्न

A thin wire 20 centimeters long is formed into a rectangle. If the width of this rectangle is 4 centimeters, what is its length?

योग
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उत्तर

Given perimeter of rectangle = 20 cm

Width of a rectangle = 4 cm

We know, perimeter of rectangle = 2 (length + breadth)

20 = 2 length + 2 breadth

2 length = 20 - 2 breadth

2 length = 20 - 2 x 4

2 length = 20 - 8

length = 12/2

= 6 cm

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