Medium Math Class 9 Level 10

If the side of a cube is 18 cm then what is its total surface area?

घन की भुजा 18 cm है तो उसका कुल पृष्ठीय क्षेत्रफल कितना होगा?

A 1620 cm² / 1620 cm² B 1844 cm² / 1844 cm² C 1944 cm² / 1944 cm² D 5832 cm² / 5832 cm²
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Correct Answer

C. 1944 cm² / 1944 cm²

Explanation

Total surface area of a cube is 6a² = 6 × 18² = 1944 cm².

घन का कुल पृष्ठीय क्षेत्रफल 6a² = 6 × 18² = 1944 cm²।

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