Slide7.JPG

Slide8.JPG

  1. Chapter 11 Class 7 Perimeter and Area
  2. Serial order wise

Transcript

Ex 11.1, 4 The perimeter of a rectangular sheet is 100 cm. If the length is 35 cm, find its breadth. Also find the area. Length of rectangular sheet = l = 35 cm Breadth of rectangular sheet = b = ? Given, Perimeter of rectangular sheet = 100 cm 2 (l + b) = 100 2(35 + b) = 100 35 + b = 100/2 b = 50 − 35 b = 15 cm ∴ Breadth of rectangular sheet = b = 15 cm Now, Area of sheet = l × b = 35 × 15 = 525 sq. cm. = 525 cm2 Sheet is of area 525 cm2

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.