Example 5 - Chapter 9 Class 7 Perimeter and Area

Last updated at August 10, 2026 by

Example 5 - Find BC, if the area of the triangle ABC is 36 cm2 - Examples

part 2 - Example 5 - Examples - Serial order wise - Chapter 9 Class 7 Perimeter and Area

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Transcript

Example 5 Find BC, if the area of the triangle ABC is 36 cm2 and the height AD is 3 cm (Fig 11.21). Height = h = AD = 3 cm Base = b = BC = ? Given, Area of โˆ†ABC = 36 cm2 ๐Ÿ/๐Ÿ ร— b ร— h = 36 1/2 ร— BC ร— 3 = 36 BC ร— 3/2 = 36 BC = 36 ร— ๐Ÿ/๐Ÿ‘ BC = 12 ร— 2 BC = 24 cm โˆด BC is 24 cm

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