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    Question

    The radius of a cone is 7 cm, and its height is 24 cm. A

    sphere is inscribed in the cone, touching the base and the curved surface. Find the radius of the sphere.
    A 5 cm Correct Answer Incorrect Answer
    B 6.72 cm Correct Answer Incorrect Answer
    C 7.55 cm Correct Answer Incorrect Answer
    D 8 cm Correct Answer Incorrect Answer

    Solution

    For an inscribed sphere in a cone, the radius of the sphere r is given by the formula: r = (r × h) / √(r² + h²), where r is the radius of the cone’s base, and h is its height. Substituting the values: r = (7 × 24) / √(7² + 24²) = 168 / √(49 + 576) = 168 / 25 = 6.72 cm.

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