Question

find the total surface area of
a hollow Cylinder open at both
ends, if its lenght is 28cm , external
radius is 7 cm and thickness is 1cm​

Answer 1

Step-by-step explanation:

The cylinder has the outer radius = 7 cm, length = 22 cm, and the wall thickness = 1 cm. External curved surface = 2(pi)*7*22 = 2*22*7*22/7 = 968 sq cm. Internal curved surface = 2(pi)*6*22 = 2*22*6*22/7 = 829.7142857 sq cm. ... r where r is the radius.

Answer 2

Answer: Total Surface Area of cylinder

$= 2\pi rh + 2\pi {r}^{2}$

Step-by-step explanation: