ANSWER
Find out the weight of the PVC pipe with an outside diameter of 0.82 inches and an inside diameter of 0.75 inches .
To proof
Formula
[tex]volume\ of\ the\ cylinder = \pi r^{2}h[/tex]
r = radius , h = height
As given
36 inch piece of PVC pipe with an outside diameter of 0.82 inches and an inside diameter of 0.75 inches.
[tex]outside\ radius = \frac{0.82}{2}[/tex]
= 0.41 inches
[tex]inside\ radius = \frac{0.75}{2}[/tex]
= 0.375 inches
Volume of the PVC pipe = volume of the outside - volume of the inside
put
[tex]\pi = 3.14[/tex]
[tex]= \ 3.14\times0.41\times0.41\times36 -\ 3.14\times0.375\times 0.375\times36[/tex]
thus solving the above
we get
Volume of the PVC pipe = 3.105 inches³ ( approx)
As given
1 inches = 0.063 pounds
weight of a PVC pipe = 3.105 × 0.063 pounds
= 0.196 pounds (approx)
Hence proved
