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Volume of Cone

Surface Areas and Volumes
Maths
Class 9

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The Volume of a Cone

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A heap of rice is in the form of a cone of diamstor 9 m and the height 3.5 m.  Find the volume of the rice.  How much canvas cloth is required to just cover the heap? 

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If two cones have their heights in the ratio 1 : 3 and radii 3 :1 then the ratio of their volumes is

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A cloth having an area of is shaped into the form of a conical tent of radius . Find the volume of the cone.

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If the height and the radius of the cone are doubled, then the volume of the come becomes

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The volume of frustum of a cone is calculated by using the formula ______  

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A conical tent has angle at the vertex. The ratio of the radius and slant height is 

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A right angled triangle with sides and is revolved about the side . Find the volume of the solid so obtained.

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The radius and the height of a cone are in the ratio . The area of the base is . Find the area of the curved surface.

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A right circular cylinder and a right circular cone have equal bases and equal heights. If their curved surfaces are in the ratio , determine the ratio of the radius of the base to the height .

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The rain water from a roof by drains into a conical vessel having the diameter of base as and height . If the vessel is just full, find the rainfall in mm.

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