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

Transcript

Example 9 (i) Find the area of the following triangles (Fig 11.20) Height = h = PS = 2 cm Base = b = QR = 4 cm Area of ∆ABC = 1/2 × b × h = 1/2 × 2 × 4 = 1 × 4 = 4 cm2 ∴ Area of ∆PQR is 4 cm2 Example 9 (ii) Find the area of the following triangles (Fig 11.20) Height = h = OL = 2 cm Base = b = MN = 3 cm Area of ∆ABC = 1/2 × b × h = 1/2 × 3 × 2 = 3 × 1 = 3 cm2 ∴ Area of ∆PQR is 3 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 9 years. He provides courses for Maths and Science at Teachoo.