If the volume of a cube is 729 cm3, then find the total surface area of the cube.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 486 cm2.
Volume of cube = (side)3
Total surface area of cube = 6(side)2
According to the given question,
(side)3 = 729
⇒ side = 9 cm
Now, TSA of cube = 6(9)2
⇒ 6 × 81 = 486 cm2