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    Question

    If the total surface area of a cube is 486 cm┬▓, then

    calculate the volume of the cube.
    A 545 cm┬│ Correct Answer Incorrect Answer
    B 690 cm┬│ Correct Answer Incorrect Answer
    C 729 cm┬│ Correct Answer Incorrect Answer
    D 840 cm┬│ Correct Answer Incorrect Answer

    Solution

    Let the length of each edge of the cube = тАШaтАЩ cm ATQ; 486 = 6a┬▓ Or, a┬▓ = 81 So, a = 9 [Since, length cannot be negative] Volume of cube = a┬│ = 9┬│ = 729 cm┬│

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