Posted by Theresa on Wednesday, August 15, 2012 at 5:28pm.
The shorter edges of a 44cm x 25cm metal sheet are joined to form the curve surface of a cylinder. What is the volume of the cylinder? What is the area of metal sheet required to make the top and the bottom cylinder?

Math  Damon, Wednesday, August 15, 2012 at 5:46pm
h = 25
2 pi r = 44
so r = 22/pi
pi r^2 h = V = pi (22/pi)^2 (25)
area top = pi r^2
area bottom = pi r^2
so
area needed = 2 pi r^2 = 2 pi (22/pi)^2
Now of course sheets of metal usually come rectangular, not circular, so in real life some will get wasted.
Answer This Question
Related Questions
 Math  The shorter edges of a 36 cm x 20 cm metalsheet are joined to form the ...
 math  A rectangular sheet of metal, of area 440 sq.cm is folded into a cylinder...
 calculus  a rectagular sheet of metal has perimeter 36 meters. maximize the ...
 maths  two cylinders have identical bases with differnt lengths.the length of ...
 math  A rectangular and two circular cutouts of metal sheet of negligible ...
 Mathematics  A sheet metal fabricator makes boxes from sheets of steel. Each ...
 Math  A metal sheet made up the faces of a cube measured 12 cm x 12 cm x 12 cm...
 Algebra  A box is to be formed from a rectangular piece of sheet metal by ...
 Physics  A metal cylinder with a area of 0.01m^2 and height of 0.1m is ...
 Physics  A 0.527 kg metal cylinder is placed inside the top of a plastic tube, ...
More Related Questions