Given a cylindrical tank, in which situation will you find surface area 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.
(a) We need to calculate the volume to find the capacity
(b) As plastering will cover the surface so we need surface area to know this
(c) Volume will give the capacity and that can be compared with capacity of smaller tanks
Diameter of cylinder A is 7 cm, and the height is 14 cm. Diameter of cylinder B is 14 cm and height is 7 cm. Without doing any calculations can you suggest whose volume is greater? Verify it by finding the volume of both the cylinders. Check whether the cylinder with greater volume also has greater surface area?