Mathematics
A metallic sphere of radius 10.5 cm in melted and then recast into small cones, each of radius 3.5 cm and height 3 cm. The number of cones formed is :
21
63
126
130
Related Questions
A sphere of diameter 12.6 cm is melted and cast into a right circular cone of height 25.2 cm. The radius of the base of the cone is :
2 cm
2.1 cm
3 cm
6.3 cm
How many lead shots each 0.3 cm in diameter can be made from a cuboid of dimensions 9 cm × 11 cm × 12 cm?
7200
8400
72000
84000
A hemispherical bowl of internal radius 9 cm contains a liquid. This liquid is to be filled into cylindrical shaped small bottles of diameter 3 cm and height 4 cm. How many bottles will be needed to empty the bowl?
27
35
54
63
A cone, a hemisphere and a cylinder stand on equal bases and have the same height. The ratio of their volumes is :
1 : 2 : 3
2 : 1 : 3
2 : 3 : 1
3 : 2 : 1