What is the total surface area of a cylinder having radius of base as 4.2 cm and height as 8 cm?

Radius of the cylinder (r) = 4.2 cm

Height of the cylinder (h) = 8 cm

The total surface area (TSA) of a cylinder includes the area of the two circular bases and the curved surface area.

Total Surface area:

(TSA) = $$2\pi r(r+h)$$

Solution:

Total Surface area (TSA)= 2πr(r+h)​

​$$=2\times3.14\times4.2(4.2+8)\\ \ \\= 2\times\frac{22}{7}\times4.2\times12.2\\ \ \\ =322.08 \: cm^2$$​​