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Janine wants to paint just the sides of a cylindrical pottery vase that has a height of 45 cm and a diameter of 14 cm. To the nearest whole number, find the number of square centimeters she will need to paint. Explain the method you would use to find the lateral area.

 Apr 6, 2016

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 #1
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The lateral surface area is  just the surface area of the side of the cylinder.....it's given by :

 

lateral Sa  = 2pi *r *h  =  2pi * (d/2) * h       filling in for d and h, we have

 

2pi * ( 14/2) * 45  =  about 1979.2 cm^2  = 1979 cm^2   [ rounded]

 

 

 

cool cool cool

 Apr 6, 2016

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