1)  What is the formula to calculate area of curved surface area of a cylinder? a) 2π rh b) π rh + 2π r² c) π r² d) π r²h 2) The total surface area of a cylinder includes the area of the two bases. True or False? a) True b) False 3) If the radius of a cylinder is doubled while keeping the height constant, how does its curved surface area change? a) It doubles. b) It becomes half. c) It quadruples. d) It remains the same. 4) A cylinder has radius 4cm and height 6cm. Find total surface area a) 150.79cm² b) 155cm² c) 251.42cm² d) 125.24cm²

TSA-9th

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