New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    A right circular cylinder of height 15cm is covered by a

    rectangular tin foil of size 15cm ×24cm. the volume of the cylinder is.
    A 577.5 Correct Answer Incorrect Answer
    B 462.6 Correct Answer Incorrect Answer
    C 541.4 Correct Answer Incorrect Answer
    D 475.5 Correct Answer Incorrect Answer

    Solution

    if tin foil covered then the curved surface area of cylinder is equal to the area of tin foil. Curved surface area = 15 ×24 H = 15cm Volume = (C.S.A)2 /4 π h = (15×22×15 ×22×7) /4×22×15 = (15×22×7)/4 = 77×15/2 =577.5cm3

    Practice Next

    Relevant for Exams: