question_answer

A cylindrical metallic pipe is 14 cm long. The difference between the outer and inner curved surface area is \[44\,c{{m}^{2}}\]. If the sum of outer and inner radius is 1.5 cm, then find the ratio of outer and inner radius of the pipe, respectively. \[\left( use\,\pi =\frac{22}{7} \right)\]

A)  2 : 1    

B)  1 : 2

C)  1 : 3                            

D)  2 : 3

E)  None of these