MEDIUM
SSC CGL Tier 1
IMPORTANT
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The radius of a solid metallic sphere is 3 dm. It is melted and recast into a circular sheet of thickness 1 mm. What is the diameter of such a sheet?

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Important Questions on Volume and Surface Area

MEDIUM
SSC CGL Tier 1
IMPORTANT
Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 63
Water is flowing at the speed of 5 m/sec through a pipe having 7 cm as its radius of cross section. How much time will it take to fill a cistern whose base area is (3×5)m2 and height 1.54 m?
MEDIUM
SSC CGL Tier 1
IMPORTANT
Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 64
On increasing the radius of a sphere by 50%, what will be the corresponding increase in its surface area?
MEDIUM
SSC CGL Tier 1
IMPORTANT
Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 65
If the radius of a sphere is doubled, its surface area will increase by :
MEDIUM
SSC CGL Tier 1
IMPORTANT
Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 66
On decreasing the radius of a sphere by 20%, its volume will decrease by :
MEDIUM
SSC CGL Tier 1
IMPORTANT
Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 67
The volume of a sphere is 4851 cm3. Its curved surface area is :
EASY
SSC CGL Tier 1
IMPORTANT
Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 68
A spherical ball of lead, 3 cm in diameter, is melted and recast into three spherical balls. The diameters of two of these balls are 1.5 cm and 2 cm respectively. The diameter of the third ball is _____.
MEDIUM
SSC CGL Tier 1
IMPORTANT
Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 69
12 spheres of the same sizes are made by melting a solid cylinder of 16 cm diameter and 2 cm height. The diameter of each sphere is_____.
EASY
SSC CGL Tier 1
IMPORTANT
Arithmetic Subjective and Objective for Competitive Examinations>Chapter 24 - Volume and Surface Area>EXERCISE 24A>Q 70
If the volume and surface area of a sphere are numerically the same, then its radius is: