Question

    The curved surface area of a hemisphere is 72π

    cm2, then its radius is:
    A 8 cm Correct Answer Incorrect Answer
    B 7 cm Correct Answer Incorrect Answer
    C 6 cm Correct Answer Incorrect Answer
    D 5 cm Correct Answer Incorrect Answer

    Solution

    The curved surface area of hemisphere with radius r is given as: CSA = 2πr2 ∴ 72π = 2πr2 ⇒ r = 6 cm

    Practice Next