Mathematics
r<sub>1</sub>, r<sub>2</sub> and r<sub>3</sub> are the radii of three metallic spheres. If these spheres are melted to form a single solid sphere, the radius of sphere formed is : 1. 2. r<sub>1</sub> + r<sub>2</sub> + r<sub>3</sub> 3. 4.
Related Questions
The ratio between the volumes of two spherical solids is 27 : 8. The ratio between their curved surface areas is :
27 : 8
8 : 27
3 : 2
9 : 4
A solid metallic sphere of radius 8 cm is melted and recast into 64 identical solid spheres. The diameter of each smaller sphere formed is :
4 cm
2 cm
8 cm
1 cm
The volume of a sphere is 38808 cm3; find its diameter and the surface area.
A spherical ball of lead has been melted and made into identical smaller balls with radius equal to half the radius of the original one. How many such balls can be made?