Question

The difference between the total surface area and curved surface area of a cylinder of base radius 10 cm is ______

Answer 1

Given:
Base radius of the cylinder is $10cm$

Let, the radius and height of the cylinder be $r$ and $h$ respectively.

Now, difference of T.S.A and C.S.A
$=2\pi r(r+h)-2\pi rh$
$=2\pi r^2$
$=2\pi \times 10\times 10$
$=200\pi c{m}^2$

Hence, the required difference is $200\pi c{m}^2$