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What is the surface area of a cylinder whose radius 7 and height is 11?
Wiki User
∙ 11y ago
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.
Wiki User
∙ 11y ago
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