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Chapter 9 Class 8 Mensuration

Serial order wise

Last updated at July 24, 2023 by Teachoo

Ex 9.2, 3 Find the side of a cube whose surface area is 600 〖𝑐𝑚〗^2.Given, Surface area of cube = 600 〖𝑐𝑚〗^2 Let Side of cube = 𝒙 cm Thus, Surface area = 6 × (Side)2 600 = 6 × 𝒙^𝟐 600/6 = 𝑥^2 100 = 𝑥^2 𝑥^2 = 100 𝑥 = √100 𝑥 = √(10^2 ) 𝒙 = 𝟏𝟎 𝒄𝒎 ∴ Side of cube = 10 cm