Class IX

The surface are of a cuboid of 16 m long, 14 m broad and 7 m high is
  1. 860 cm²
  2. 868 cm²
  3. 910 cm²
  4. 910 cm²
If the surface areas of of two spheres are in the ratio of 4 : 25, then the ratio of their volumes are
  1. 0.184027778
  2. 1.044444444
  3. 5.213888889
  4. 0.420138889
The diagonal of a cube is 6√3 cm. Then its volume is
  1. 216 cm³
  2. 64 cm³
  3. 144 cm³
  4. 136 cm³
The curved surface are of the cube is 1734 cm2 , then the length of the side of the cube is
  1. 17 cm
  2. 13 cm
  3. 15 cm
  4. 19 cm
A cone, a hemisphere and a cylinder stand on equal bases and have the same height. The ratio of their volume is
  1. 0.043090278
  2. 0.04380787
  3. 0.086168981
  4. 0.043101852
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