Question

the perimeter of rectangular. piece of paper is 56cm.if the length is 3 time it's width. what is its width?​

Answer 1

Answer:

perimeter of rect. = 2( l+ b )

so, 56 cm = 2 ( 3 + b)

56 cm ÷ 2 - 3 = b

so, breadth = 25 cm .

Answer 2

Answer:

• Length of rectangular paper = 21 cm
• Breadth of rectangular paper = 7 cm

Step-by-step explanation:

Given:

• Perimeter of rectangular paper = 56 cm
• Length of paper is 3 times to its Breadth.

To Find:

• Breadth of the paper.

Let Breadth of paper be x, then length of paper = 3x

We know that,

⇒ Perimeter of rectangle = 2(l + b)

⇒ 56 = 2(3x + x)

⇒ 56 = 2(4x)

⇒ 56 = 8x

⇒ x = 56/8

⇒ x = 7

Hence,

• Breadth = x = 7 cm.

• Length = 3x = 7 × 3 = 21 cm.

Extra Info:

• Perimeter of rectangle = 2(l + b)
• Area of rectangle = l × b
• Where, l = Length and b = Breadth

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