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    Find the curved surface area of a cylinder with radius of base 7 cm and height 9.5 cm. (Use π = 22/7 )
    Question

    Find the curved surface area of a cylinder with radius of base 7 cm and height 9.5 cm. (Use π = 22/7 )

    A.

    420 cm²

    B.

    430 cm²

    C.

    428 cm²

    D.

    418 cm²

    Correct option is D

    Given:
    Radius of the base of the cylinder, r = 7 cm
    Height of the cylinder, h = 9.5 cm
    π = 22/7
    Formula Used:
    The curved surface area (CSA) of a cylinder = 2πrh
    Solution:
    CSA = 2 ×227\frac{22}{7}​ × 7 × 9.5 = 2 × 22 × 9.5 = 418 cm²
    The curved surface area of the cylinder is 418 cm².

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