Surface Area of a Right Circular Cone We have already studied the surface areas of cube, cuboid and cylinder. We will now study the surface area of cone. So
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Surface Area of a Sphere What is a sphere? Is it the same as a circle? Can you draw a circle on a paper? Yes, you can, because a circle is a plane closed figure whose every point lies at a constant
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Volume of a Right Circular Cone In earlier classes we have studied the volumes of cube, cuboid and cylinder Fig 11.11 In Fig 11.11, can you see that there is a right circular cylinder
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Volume of a Sphere Now, let us see how to go about measuring the volume of a sphere. First, take two or three spheres of different radii, and a container big enough to be able to put each of the sp
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