A metallic wire of uniform cross-section is melted to form 28 small solid spheres of radius 12.6 cm each
A metallic wire of uniform cross-section is melted to form 28 small solid spheres of radius 12.6 cm each. If the radius of wire is 1/7 time more than the radius of each sphere, what is the length of the wire?
(a) 260 cm
(b) 360 cm
(c) 326 cm
(d) 390 cm
Sol:
