Question

sphere of radius 3cm is melted and reformed by stretching it into a
lindrical shaped wire of length 9m. Find the radius of the radius if the wire​

Answer 1

Answer:

Area of the sphere = 4/3 *π *3*3*3

Area of cylinder = πr²h = πr² * 900cm

Atq-

Area of Sphere = area of cylinder

4/3 *π *3*3*3 = π*r² *900

4*3*3 /900 = r²

r = 2*3/30 = 6/30 = 1/5 = 0.2cm