Mathematics
A solid metallic cone of radius 10 cm and height 12 cm is melted to form a wire of uniform cross-section 1 cm2. The length of wire formed is :
40 × π cm
4 × π m
400 × π m
2 × π m
Related Questions
The radius and the height of a cone are in the ratio 2 : 1. The ratio between the volumes of a sphere and this cone (both having equal radii) is :
1 : 4
4 : 1
8 : 1
1 : 8
A solid metallic cylinder is melted and formed into identical solid cones each having same radius and same height as that of the cylinder. The number of cones formed is :
3
6
9
2
A solid sphere of radius 15 cm is melted and recast into solid right circular cones of radius 2.5 cm and height 8 cm. Calculate the number of cones recast.
A hollow sphere of internal and external diameters 4 cm and 8 cm, respectively is melted into a cone of base diameter 8 cm. Find the height of the cone.