Calculate the surface area of a hallow cylinder which is closed at one end, if the base radius is 3.5cm and the height 8cm.[take π = 22/7]
The correct answer is D. 214.5cm2
since it is an open cylinder; r= 3.5cm = 7/2cm
h= 8cm;
S.A = 2Ïrh + Ïr 2
= Ïr(2h + r)
(16 + 3.5); 11 x 19.5 = 214.5cm2
Previous question Next questionWhat is Exam without Practice? With our customizable CBT practice tests, you’ll be well-prepared and ready to excel in your examsStart Practicing Now