Hard Math Class 9 Level 3

The total surface area of a cube is 864 cm². What is its volume?

घन का कुल पृष्ठीय क्षेत्रफल 864 cm² है। उसका आयतन कितना होगा?

Show answer and explanation
Correct Answer

C. 1728 cm³ / 1728 cm³

Explanation

From 6a² = 864 we get a² = 144 and a = 12. Hence volume = 12³ = 1728 cm³.

6a² = 864 से a² = 144 और a = 12। अतः आयतन 12³ = 1728 cm³।

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