MEDIUM
SSC CGL Tier 1
IMPORTANT
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The radius of a solid metallic sphere is . It is melted and recast into a circular sheet of thickness . What is the diameter of such a sheet?
(a)
(b)
(c)
(d)

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Important Questions on Volume and Surface Area
MEDIUM
SSC CGL Tier 1
IMPORTANT
Water is flowing at the speed of through a pipe having as its radius of cross section. How much time will it take to fill a cistern whose base area is and height ?

MEDIUM
SSC CGL Tier 1
IMPORTANT
On increasing the radius of a sphere by , what will be the corresponding increase in its surface area?

MEDIUM
SSC CGL Tier 1
IMPORTANT
If the radius of a sphere is doubled, its surface area will increase by :

MEDIUM
SSC CGL Tier 1
IMPORTANT
On decreasing the radius of a sphere by , its volume will decrease by :

MEDIUM
SSC CGL Tier 1
IMPORTANT
The volume of a sphere is . Its curved surface area is :

EASY
SSC CGL Tier 1
IMPORTANT
A spherical ball of lead, cm in diameter, is melted and recast into three spherical balls. The diameters of two of these balls are cm and cm respectively. The diameter of the third ball is _____.

MEDIUM
SSC CGL Tier 1
IMPORTANT
spheres of the same sizes are made by melting a solid cylinder of diameter and height. The diameter of each sphere is_____.

EASY
SSC CGL Tier 1
IMPORTANT
If the volume and surface area of a sphere are numerically the same, then its radius is:
