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- if the radius of a sphere is 3 cm then find its surface area?
- 72pi
- 4pi
- 9pi
- 36pi

- if the radius of a hemi-sphere is 6cm then find its volume?
- 126pi
- 121pi
- 144pi
- 231pi

- if the radius of a hemi-sphere is 3 cm then find its surface area?
- 9pi
- 27pi
- 81pi
- 16pi

- If the radius and height of a cylinder are 4 cm and 5 cms respectively then find its curved surface area?
- 40pi
- 30pi
- 45pi
- 50pi

- If the radius and height of a cylinder are 5 cm and 8 cms respectively then find its total surface area?
- 100pi
- 120pi
- 130pi
- 140pi

- A iron sphere of radius 3 m is melted and forms in to number of cylinders each measuring radius 10 cm and height 20 cm. Find how many such cylinders can be made?
- 16000
- 18000
- 15000
- 14000

- A iron cylinder of radius6 m and height 10 m ismelted and forms into number of sphere each radius 10 cms then find the number of such spheres?
- 250000
- 360000
- 270000
- 260000

- If the volume of sphere and cylinder are numerically equal and having equal radius then find the ratio of radius and height?
- 4:3
- 3:4
- 2:3
- 3:2

- If the radius and height o a cone are 3 cm and 5 cm then find its volume?
- 12pi
- 10pi
- 15pi
- 20pi

- The radius and height of a come are 3 cm and 4 cm then find its slant height?
- 3
- 4
- 5
- 6

**KEY:::1(d) 2(c) 3(b) 4(a) 5(c) 6(a) 7(c) 8(b) 9(c) 10(c)**

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