Cylinder
a round
Hexagon
You can make a tube (or pipe) by using a rectangle and bending it around on itself. With two circles, you can close of each end of the tube to make a cylinder.
drawing for lateral pipe
Cylinder
2
a round
boboanggooglechromesobrataposnataposnarinyehey
not enough information. size and shape of pipe needed.
The copper pipe in the solar water is wrapped in the shape of a coil to give it maximum surface area.
A rounded pipe will reduce molecular friction of the fluid or gas traveling in the pipe. Rounded pipes allow freer, faster flow compared with any other shape.
gosh i dont know
Hexagon
Peace lily, or Dutchman's pipe
No, they must have an aerofoil shape.
Try wrapping the pipe in tin foil as this keeps the heat in. If not, try cutting styrofoam into the shape of the pipe and attaching it to it, keeping it together with electrical tape.