question_answer

The difference between the areas of outside and inside surface of a cylindrical metallic pipe 14 cm long is \[\mathbf{132c}{{\mathbf{m}}^{\mathbf{2}}}\]. If the pipe is made of \[\mathbf{495c}{{\mathbf{m}}^{\mathbf{3}}}\] of metal, find the outer and inner radii of the pipe.

A)  4.5 cm and 3 cm          

B)  3.5 cm and 2.0 cm

C)  5.0 cm and 3.5 cm                                           

D)  4.0 cm and 2.5 cm

E)  None of these