Outside circumference is 38 so 2 x pi x the radius = 38 ie radius = 19/pi which is just over 6 cm.
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pi * radius2 * height ( pie = 3.14) ( radius is half the diameter) ( the height is 60cm) multiply them all together you get.............................
Entire surface area = (2*pi*72)+(14*pi*11) = 791.681 square units to 3 decimal places The area of each of the circles at the ends is pi times the square of the radius, and the surface area of the tube is the circumference times the height, with the circumference being pi times the diameter. Then add together the three areas (2 times the circle plus the tube). If you forget the equation for the surface area of a tube, imagine cutting the tube along its length (height) and laying it flat. Then what was the circumference of a tube becomes the width of a rectangle.
We need to know the dimensions of the tube. The diameter AND the length of the tube. It takes o.465 yards per foot of length for a tube 4 feet in diameter. .
That depends on the thickness or diameter of the tube.
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