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    Question

    A frustum of a square pyramid has base edges of 10 cm

    and 6 cm, and a height of 8 cm. What is its volume? Calculate approximate value 
    A 560 cm³ Correct Answer Incorrect Answer
    B 580 cm³ Correct Answer Incorrect Answer
    C 523 cm³ Correct Answer Incorrect Answer
    D 620 cm³ Correct Answer Incorrect Answer

    Solution

    Volume of a frustum of a square pyramid = (1/3)h(a² + b² + ab) = (1/3) * 8 * (10² + 6² + 10*6) = (1/3) × 8 × (196) = (8×196)/3 = 1568/3 = 522.66 cm or 523 cm³ Answer: (C)

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