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A container shaped like a right circular cylinder having diameter 12 cm and height 15 cm is full of ice cream. The ice cream is to be filled into cones of height 12 cm and diameter 6 cm, having a hemispherical shape on the top. Find the number of such cones which can be filled with ice cream. Q.5

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What is the best solution of ncert class 10 question of chapter surface areas and volumes please find the best solution of the exercise 13.3 question number 5. Please help me to solve this tricky solution of the question its very important question of this chapter.A container shaped like a right circular cylinder having diameter 12 cm and height 15 cm is full of ice cream. The ice cream is to be filled into cones of height 12 cm and diameter 6 cm, having a hemispherical shape on the top. Find the number of such cones which can be filled with ice cream.

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  1. Number of cones will be = Volume of cylinder / Volume of ice cream cone

    For the cylinder part,

    Radius = 12/2 = 6 cm

    Height = 15 cm

    ∴ Volume of cylinder = π×r2×h = 540π

    For the ice cone part,

    Radius of conical part = 6/2 = 3 cm

    Height = 12 cm

    Radius of hemispherical part = 6/2 = 3 cm

    Now,

    Volume of ice cream cone = Volume of conical part + Volume of hemispherical part

    = (⅓)×π×r2×h+(⅔)×π×r3

    = 36π +18π

    = 54π

    ∴ Number of cones = (540π/54π)

    = 10

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