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16 November, 04:32

The formula for the surface area of a circular cylinder is SA = 2πr 2 + 2πrh cubic units. What do 2πr 2 and 2πrh represent?

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  1. 16 November, 04:44
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    Remember

    area=pir^2

    circumference=2pir

    the surface aera if you thinkg about it is

    2 times the tops+area around

    the tops are circles so 2*pir^2 is tops

    the area around is a rectangle that has been wrapped around the cylinder,

    the hieght is the legnth and the circumference is width

    so 2hpir is the area around

    2pir^2 is the areas of the tops

    2hpir is the area around
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