Question

The radius of the internal and external surface of the hollow spherical shell are 3cm and 5cm respectively .After melting its is recasted into solid cylinder of height 2×2÷3 cm what is the radius of the cylinder

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation

Volume of sphere= 4/3*π×(R³-r³)

                              =4/3×π×(125-27)

                               =4/3×π×98

Volume of cylinder= π×r²×h

                                =π×r²×4/3

           4/3 *π*98= 4/3*π*r²

                      r²=98

                      r=√98

                           =9.89