<PRE><B>Question 1018347</B>
Hi there,
2.44 meters = 244 centimeters
533 millimeters = 53.3 centimeters
425 millimeters = 42.5 centimeters
Using outside radius (53.3/2 = 26.65 centimeters)
Volume = Pi x radius^2 x height(length)
Volume = Pi x 26.25^2 x 244 = 528199.8998 cm^3
Using inside radius (42.5/2 = 21.25)
Volume = Pi x radius^2 x height(length)
Volume = Pi x 21.25^2 x 244 = 346144.6056 cm^3
528199.8998 - 346144.6056
= 182055.2942 cm^3 This is the thickness of the pipe
The amount of concrete to make 1 pipe.
= 182.055 litres
1000 pipes = 182.055 x 1000
182055 litres of concrete.
Hope this helps :-)</PRE>