Question

. The total surface area of ​​a closed circular cylinder of radius of 3.5 m and height

7 m is:

Answer 1

total surface area of cylinder = 2πr(r+h)
= 2 × 22/7 × 35/10 × 105/10m^2
= 231 m^2

Answer 2

r=radius
h=hieght
a=area of circular cylinder+it's two lid