lu. Il Is lhe height by which the ground is raised?14 The thickness of

1.	lu. Il Is lhe height by which the ground is raised?14 The thickness of a metallic pipe is 1 cm. Its inner diameter is 12 cm. What is the volume of metalneeded for a pipe of length 1 m? [Ď3.14].
Answer» Volume of metal needed = (volume of full pipe) - (volume of inner cylinder) Diameter of pipe = 12 + 2 = 14 cm=> radius of pipe = R = 7 cm Radius of inner cylinder = r = 12/2 = 6 cm Length of pipe = 100cm => volume of metal = pi * R^2 * h - pi * r^2 * h= pi * h (R^2 - r^2)= (22/7) * 100 * (7^2 - 6^2)= 4085.71 cm^3 bro plz tell in simple language

lu. Il Is lhe height by which the ground is raised?14 The thickness of a metallic pipe is 1 cm. Its inner diameter is 12 cm. What is the volume of metalneeded for a pipe of length 1 m? [Ď3.14].

Answer»

Volume of metal needed = (volume of full pipe) - (volume of inner cylinder)

Diameter of pipe = 12 + 2 = 14 cm=> radius of pipe = R = 7 cm

Radius of inner cylinder = r = 12/2 = 6 cm

Length of pipe = 100cm

=> volume of metal = pi * R^2 * h - pi * r^2 * h= pi * h (R^2 - r^2)= (22/7) * 100 * (7^2 - 6^2)= 4085.71 cm^3

bro plz tell in simple language