SOLUTION: a wedding cake is made out of three cylindrical layers with diameters 45",30" and 15". each layer is 4" high. only visible surface will be iced Determine the area to be iced

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Question 999092: a wedding cake is made out of three cylindrical layers with diameters 45",30" and 15". each layer is 4" high. only visible surface will be iced
Determine the area to be iced

Answer by Alan3354(69443) About Me  (Show Source):
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a wedding cake is made out of three cylindrical layers with diameters 45",30" and 15". each layer is 4" high. only visible surface will be iced
Determine the area to be iced
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The area of a 45" circle, plus the lateral area of 3 cylinders.
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One cylinder with d = 45", h = 4"
One cylinder with d = 30", h = 4"
One cylinder with d = 15", h = 4"
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Lateral area of a cylinder = pi%2Ad%2Ah