Question

the pipe has a length 21cm, internal diameter 4cm and thickness 0.5cm work out the volume

Answer 1

Answer:

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Step-by-step explanation:

Answer 2

The volume is 148.5 cubic cm.

Step-by-step explanation:

Length of pipe = 21 cm

Internal diameter = 4 cm

Internal radius = $\frac{4}{2} = 2 cm$

Thickness = 0.5 cm

Outer radius = 2+0.5=2.5 cm

Volume of pipe =$\pi R^2 h - \pi r^2 h$

Volume of pipe =$\frac{22}{7} (2.5)^2 (21)-\frac{22}{7}(2)^2(21)=148.5 cm^3$

Hence The volume is 148.5 cubic cm.

#Learn more:

The thickness of a metal pipe is 1.5cm. The inner diameter is 21cm. What is the volume of metal required for a pipe of length 7cm

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