The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm, find its breadth. Also find the area

Solution:

The perimeter of a rectangular sheet = 100 cm

Length of the rectangular sheet (l) = 35 cm

Let the breadth be 'b' cm

Perimeter of a rectangular sheet = 2 (Length + Breadth)

100 = 2l + 2b

100 = 2 × 35 + 2b

100 = 70 + 2b

2b =100 - 70

b = 30/2

b = 15 cm

Area of a rectangular sheet = Length × Breadth

= 35 cm × 15 cm

= 525 cm²

☛ Check: NCERT Solutions Class 7 Maths Chapter 11

Video Solution:

The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm, find its breadth. Also find the area

Class 7 Maths NCERT Solutions Chapter 11 Exercise 11.1 Question 4

Summary:

The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm, its breadth will be 15 cm. Also the area will be 525 cm².

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