Example 7 - Chapter 9 Class 8 Mensuration

Last updated at April 16, 2024 by

Example 7 - Find the height of a cylinder whose radius is 7 cm and

Example 7 - Chapter 11 Class 8 Mensuration - Part 2

Transcript

Example 7 Find the height of a cylinder whose radius is 7 cm and the total surface area is 968 〖𝑐𝑚〗^2. Given, Radius of Cylinder = 7 cm Total surface area = 968 c𝑚^2 Let Height of Cylinder = h Total Surface Area = 968 m2 2𝜋𝑟(𝑟+ℎ) = 968 2×22/7×7×(7+ℎ) = 968 2×22(7+ℎ) = 968 44×(7+ℎ) = 968 7+ℎ = 968/44 7+ℎ = 484/22 7+ℎ = 242/11 7+ℎ = 22 ℎ = 22−7 ℎ = 15 cm ∴ . The height of the cylinder is 15 cm.

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.