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    Question

    A cuboid has length 8 cm, breadth 5 cm, and height 12

    cm. Find (i) volume, (ii) total surface area.
    A 420 cm³ and 342 cm² Correct Answer Incorrect Answer
    B 380 cm³ and 592 cm² Correct Answer Incorrect Answer
    C 480 cm³ and 392 cm² Correct Answer Incorrect Answer
    D 400 cm³ and 292 cm² Correct Answer Incorrect Answer

    Solution

    ATQ, Volume = l × b × h = 8 × 5 × 12 = 480 cm³ TSA = 2(lb + bh + hl) = 2(8×5 + 5×12 + 12×8) = 2(40 + 60 + 96) = 2 × 196 = 392 cm² Answer: Volume = 480 cm³; TSA = 392 cm²

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