Three solid metallic balls of radii, 3 cm, 4cm and 5 cm are
melted and moulded into a single solid ball. The radius of the
new ball is
Choose the correct answer:
A) 4	B) 5	C) 6	D) 7	E) 8
Total volume of three metallic balls(spheres)= (4/3)*Pi*(3^3+4^3+5^3)   =(4/3)*Pi*216= Volume of new ball with radius 'r'   so (4/3)*Pi*r^3=(4/3)*Pi*216   r^3=216 , r=6   ANSWER:5
<result>B</result>
Three solid metallic balls of radii, 3 cm, 4cm and 5 cm are
melted and moulded into a single solid ball. The radius of the
new ball is