Question

The perimeter of rectangleis 20 cmlf the length of rectangleis 6 cm then its breathe will be

Answer 1

Answer:

perimeter of rectangle=2(l+b)

length=6cm(given)

breadth=x

perimeter=20cm(given)

so,

2(6+x)=20

12+2x=20

2x=20-12

2x=8

x=8\2

x=4

therefore,breadth=x=4cm

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Answer 2

Answer:

• The breadth of the rectangle = 4 cm

Given:

• The perimeter of the rectangleis 20 cm.
• The length of the rectangle is 6 cm.

Need to find:

• The breadth of the rectangle = ?

Solution:

Let the breadth of the rectangle be y.

Formula used here

• Perimeter = 2 × (length + breadth)

Putting the values:

➜ 2 × (6 + y) = 20

➜ 12 + 2y = 20

➜ 2y = 20 - 12

➜ 2y = 8

➜ y = 8\2

➜ y = 4

Therefore:

• The breadth of the rectangle = 4 cm

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