If radius and height of a cylinder increase by 20% and15% respectively. then what is the % change in curved surface area?
% Change in Curved Surface Area is given by
%Change in radius + %Change in height + %Change in radius × %Change in height 100
⇒+20 + 15 + 20×15100 = 38%
Find the total surface area (in sq.cm) of a right circular cylinder of diameter 21 cm and height 10 cm.
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