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What is the total surface area of a cylinder whose radius equals 6cm and height equals 30cm?
Wiki User
∙ 13y ago
A cylinder has 2 circular ends and the curved side.
If the cylinder was a drinks can, then it could be cut down from one ciircular end to the other and the side uncurled to give a rectangle with one dimension the height of the cylinder and the other the circumference of the circular end.
Thus the surface area of a cylinder is twice the area of an end plus the circumference of the end times the height of the cylinder:
area = 2{pi}r2 + 2{pi}rh
= 2{pi}r(r + h)
= 2{pi}6(6 + 30)
= 12{pi}36
= 432{pi}
~= 1357.2 cm2
Wiki User
∙ 13y ago
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