the diameter of the base of a right circular cylinder is 4.2 decimeter and its height is 1 decimeter find the area of the curved surface in centimetre square
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Diameter = 4,2 d m Radius = 4.2/2=2.1 d m = 2.1*10=21 cm
Height = 1 d m = 1*10=10 cm [1 d m= 10 cm]
CSA= 2*pi*r*h sq,cm
2*22/7*21*1=132 sq.cm
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