Question

Consider two cylinders. The first one has radius r and height h. The second one has height = ½ h and radius =r. What will be ratio of the CSA of the cylinders

Answer 1

Answer:

2:1

Step-by-step explanation:

csa of 1 cylinder=2.pi.r.h

csa of 2 cylinder=2.pi.r.1/2h

                          =pi.r.h

csa1/csa2= 2.pi.r.h/pi.r.h

               =2/1

               =2:1