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THE CURVED SURFACE AREA OF A …

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THE CURVED SURFACE AREA OF A RIGHT CIRCULAR CYLINDER IS 6600 CM^2 AND THE CIRCUMFERENCE OF ITS BASED IS 55CM FIND THE HEIGHT OF CYLINDER. .

    • Posted by Amaan Ahmad Salmani 5 years, 2 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Gaurav Seth 5 years, 1 month ago

    Given,

    area of curved surface of a right circular cylinder is =6600 cm^2...(1)

    circumference of its base is =55 cm...(2)

    volume of a right circular cylinder is= 1100.......(3)

    curved surface of a right circular cylinder is=2πrh. ... from (1)

    =6600 cm^2...(4)

    where, r=radius of the base of the cylinder,

    h=height of the cylinder

    circumference of the base of the cylinder=2πr=55 cm..... from (2)....(5)

    where, r=radius of the base of the cylinder

    2π×r=2×3.14159265×r

    =6.2831853×r=55

    r=55÷6.28=8.75 cm {it's no need to find radius of the base of the cylinder for finding out height of the cylinder} ...(6)

    from (4),

    2πrh=6600

    55×h=6600... from (5)

    .•. h=6600÷55=125 cm

    Therefore the height of the cylinder is=125 cm

    0Thank You

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