Question

a metallic pipe whose internal and external diameters are 8cm and 6cm has a length of the 2.1m find the volume of the metal

Answer 1

$\textbf{Solution:}$

The external diameter of the pipe = 8 cm

The internal diameter of the pipe = 6 cm 

External radius = 4 cm and it is denoted as 'R'

Internal diameter = 3 cm and it is denoted as 'r'

Length or height of the pipe = 2.1 m or 210 cm

Volume of the metal = Outer volume of pipe - Inner volume of pipe

=> πR²h - πr²h

=> (22/7 × 4² × 210) - (22/7 × 3² × 210)

=> 10560 - 5940

=> 4620

•°• Volume of the metal = 4620 cm^³

$\textbf{Thank you!!}$

Answer 2

HOPE IT HELPS..............