31)

A solid cube is cut into three cuboids of same volumes. What is the ratio of the surface area of the cube to the sum of the surface areas of any two of the cuboids so formed?

SSC CGL 2019

A)

9 : 10

B)

27 : 16

C)

27 : 10

D)

9 : 8

32)

If the curved surface area of a solid cylinder is one-third of its total surface area, then what is the ratio of its diameter to its height?

SSC CGL 2019

A)

5 : 2

B)

1 : 1

C)

2 : 1

D)

4 : 1

33)

If the volume of a sphere is 4851 \(cm^3\), then its surface area (in \(cm^2\)) is: (Take \(\pi={22\over7}\))

SSC CGL 2019

A)

1386

B)

2772

C)

1323

D)

1337