Question

Given a cylindrical tank, in which situation will you find surface are and in which situation volume.
(a) To find how much it can hold
(b) Number of cement bags required to plaster it
(c) To find the number of smaller tanks that can be filled with water from it

Answer 1

We find area when a region covered by a boundary, such as outer and inner surface area of a cylinder, a cone, a sphere and surface of wall or floor. 

When the amount of space occupied by an object such as water, milk, coffee, tea, etc., then we have to find out volume of the object. 

(a) Volume (b) Surface are (c) Volume