the thickness of the metal required for making the pipe would be

Question

A metal pipe of 1 m diameter contains a fluid having a pressure of 10 kgf/cm². If the permissible tensile stress in the metal is 200 kgf/cm², then the thickness of the metal required for making the pipe would be

(a) 5mm              (b) 10 mm

(c) 20 mm           (d) 25 mm