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Mathematics
21. Surface Area and Volume of a Sphere
Home · Class 9 · Mathematics · Ref. Book · 21. Surface Area and Volume of a Sphere
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Q1 of 70 Page 21

In a cone the number of faces is

Faces are the flat surface on a 3D figure.


Thus, cone has one flat surface, i.e., the base.


Number of faces of a cone = 1

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9

The surface area of a sphere of radius 5 cm is five times the area of the curved surface of a cone of radius 4 cm. Find the height of the cone.

10

If a sphere is inscribed in a cube, find the ratio of the volume of cube to the volume of the sphere.

2

The total surface area of a hemisphere of radius r is

3

The ratio of the total surface area of a sphere and a hemisphere of same radius is

Questions · 70
21. Surface Area and Volume of a Sphere
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