Question

9. A rectangular sheet of paper is 15 cm long and 12 cm wide. Find its perimeter.
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Answer 1

Given :

• Length of rectangular sheet of paper = 15 cm
• Breadth of rectangular sheet of paper = 12 cm

To Find :

• Perimeter of rectangular sheet of paper = ?

Solution :

As, we have :

• Length of rectangular sheet of paper = 15 cm
• Breadth of rectangular sheet of paper = 12 cm

So, to find perimeter we have a formula :

[Perimeter of rectangle = 2 (length + breadth)]

So, For perimeter of given rectangular sheet of paper :

Perimeter = 2 (15 cm + 12 cm)

                 = 2 (27 cm)

                 = 2 × 27 cm

                 = 54 cm

Hence, Perimeter of given rectangular sheet of paper is 54 cm.

Answer 2

Given parameters :

• The length of a rectangular sheet of paper is 15 cm
• The breadth of the sheet is 12 cm

To find :

• The perimeter of the sheet

Formula used :

• Perimeter of rectangle = 2 ( length + breadth )

Solution :

• Length = 15 cm
• Width / Breadth = 12 cm

Put the values in the formula ,

• Perimeter of rectangle = 2 ( 15 + 12 )
• Perimeter = 2 × 27
• Perimeter = 54 cm