find the volume of a cone with height 28mm and circumference of base 132 mm
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height= 28mm
circumference of the base( circle ) = 2πr= 132mm
r= 132/2×7 /22
r= 21mm
volume of cone =1/3πr^2h
= 1/3×22/7×21×21×28
=12936mm^3
the volume of the cone is 12936mm^3
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