Question

A drainage pipe is a cylindrical shell 21 cm long. The inside and outside diameters are 4.5 cm and 5.1 cm respectively. What is the volume of the clay required to make the pipe?

Answer 1

Answer:

W-T-F

Step-by-step explanation:

WEDNESDAY-THURSDAY-FRIDAY

Answer 2

Height = 21m

Inside Diameter = 4.5cm

(r)Inside Radius = 2.25cm

Outside Diameter = 5.1cm

(R)Outside Radius = 2.55cm

Volume Required = Outer volume - inner volume

Vol req = $\pi$R^2h -  $\pi$r^2h

            =  $\pi$h(R^2 - r^2)

            = 22/7 x 21 x ( 6.5025 - 5.0625 )

            = 22 x 3 x 1.44

            = 66 x 1.44

            = 95.04cm^3

Hope this helped!