The surface area of a cube is 726 sq cm. Find the volume

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The surface area of a cube is 726 sq cm. Find the volume of the cube. ?

1. 1331 cm³
2. 1232 cm³
3. 1626 cm³
4. 1836 cm³

Correct Option: A

According to the question,
6a² = 726 [a = edge of the cube]
⇒ a² = 726/6 = 121
∴ a = √121 = 11 cm
∴ Required volume = a³ = 11³ = 1331 cm³