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The Volume of a Cube is 729 Cm3. Find Its Total Surface Area

The volume of a cube is 729 cm³. Find its total surface area.

Sum

Let a be the one edge of a cube.

Volume = a³729 = a³
9³ = a³9 = a
a = 9 cm

Total surface area = 6a² = 6 x 9² = 486 cm²

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Chapter 20: Solids [Surface Area and Volume of 3-D Solids] - Exercise 21 (A) [Page 269]

Chapter 20 Solids [Surface Area and Volume of 3-D Solids]
Exercise 21 (A) | Q 2 | Page 269

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