Question

find the ratio of total surface area of a cylinder to its curved surface area.given that its height and radius 35 cm and 14cm respectively.​

Answer 1

Answer:

7:5

Step-by-step explanation:

TSA of a cylinder = 2$\pi$r(h+r) sq.units

CSA of a cylinder = 2$\pi$rh sq.units

=> ratio between TSA & LSA = 2$\pi$r(h+r) : 2$\pi$rh

                                                = (h+r) : h

given, h = 35cm & r = 14cm

so, the ratio becomes, (35+14) : 35

ie., 49:35

or 7:5