Question : If the volume of a cube is 729 cm3, then find the total surface area of the cube.
Option 1: 484 cm2
Option 2: 482 cm2
Option 3: 488 cm2
Option 4: 486 cm2
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Correct Answer: 486 cm 2
Solution :
Given:
The volume of a cube = 729 cm³.
⇒ (Side)
3
= 729
⇒ Side = $\sqrt[3]{729}$
⇒ Side = 9 cm
Total surface area of the cube = 6 × (Side)
2
= 6 × 9
2
= 486 cm
2
Hence, the correct answer is 486 cm
2
.
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