Class 10 Exam  >  Class 10 Notes  >  Lab Manuals for Class 10  >  Viva Voce : Volume of a Sphere

Viva Voce : Volume of a Sphere | Lab Manuals for Class 10 PDF Download

Q.1. What is the ratio of the volume of a hemisphere to that of a sphere of same radius?

1:2


Q.2. What is the ratio of the volume of a cube to that of a sphere which will exacdy fit inside the cube ?

6 : π


Q.3. How many balls each of radius 1 cm can be made from a solid sphere of lead of radius 8 cm ?

512 balls


Q.4. If the number of square centimetres on the surface of a sphere is equal to the number of cubic centimetres in its volume. What is the radius of the sphere ?

3 cm


Q.5. What is the ratio of the volume of a sphere to that of a cone whose height and radius of base are same as radius of the sphere ?

4:1


Q.6. Metallic spheres of radii 3 cm, 4 cm and 5 cm respectively are melted to form a single solid sphere. Find the radius of the resulting sphere.

6 cm


Q.7. What is the volume of a sphere ?

4πr3/3 , where r is the radius of the sphere


Q.8. What is the formula for volume of a hemisphere ?

2πr3/3 , where r = radius of hemisphere


Q.9. The diameter of a sphere is 42 cm. It is melted and drawn into a cylindrical wire of diameter 28 cm. Find the length of the wire.
(a) 63 cm
(b) 61cm
(c) 64 cm
(d) 60 cm

Correct options is (a)


Q.10. A hemispherical bowl has a radius of 3.5 cm. What would be the volume of water it would contain ?
(a) 64 cm3 
(b) 63 cm3
(c) 62 cm3
(d) none of these

Correct options is (d)

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