The diagonal of a cube is 2√3 cm. Find the surface

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The diagonal of a cube is 2√3 cm. Find the surface area of the cube.

1. 15 sq cm
2. 18 sq cm
3. 25 sq cm
4. 24 sq cm

Correct Option: D

Given, diagonal = 2√3
⇒ a√3 = 2√3 [a = edge of the cube]
∴ a = 2
∴ Required surface area = 6a²
= 6 x 2² = 24 sq cm