A rectangular sheet of paper is \(12{\Large\frac{1}{2}}\) cm long and \(10{\Large\frac{2}{3}}\) cm wide. Find its perimeter.

Solution:

The perimeter of a rectangle can be calculated easily by adding lengths of four sides of the rectangle.

Length = \(12{\Large\frac{1}{2}}\) cm = 25/2 cm

Breadth = \(10{\Large\frac{2}{3}}\) cm = 32/3 cm

We know that,

Perimeter of the rectangle = 2 × (length + breadth)

= 2 × [(25/2) + (32/3)]

= 2 × {[(25 × 3) + (32 × 2)]/6}

= 2 × [(75 + 64)/6]

= 2 × [139/6]

= 139/3 cm

Therefore, the perimeter of the rectangular sheet of paper is  \(46{\Large\frac{1}{3}}\) cm.

Video Solution:

A rectangular sheet of paper is \(12{\Large\frac{1}{2}}\) cm long and \(10{\Large\frac{2}{3}}\)cm wide. Find its perimeter

NCERT Solutions Class 7 Maths Chapter 2 Exercise 2.1 Question 4

Summary:

A rectangular sheet of paper is \(12{\Large\frac{1}{2}}\) cm long and \(10{\Large\frac{2}{3}}\)cm wide. Therefore, the perimeter of the rectangular sheet of paper is  \(46{\Large\frac{1}{3}}\)  cm.

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