Question

The total surface area of a regular cylinder is ___​

Answer 1

Answer:

2πr^2 is the tsa of regular cylinder

Answer 2

Answer:

TSA of Cylinder = 2πr (h + r )

A cylinder's TSA is generally given as CSA of Cylinder + Area of Bases.

According to geometry, CSA of a cylinder is given as 2πrh. Area of bases is actually area of circles with radius 'r'

⇒ Area of Bases = 2 × πr²  as 2 circles are there.

Therefore TSA of Cylinder = 2πr² + 2πrh = 2πr ( h + r )

Hope it helped !!