Page 2 - ACTIVITY -VOLUME OF CYLINDER

Step 3: Place the eight parts adjacent to each other to form a solid structure
approximately resembling a cuboid as shown in Figure 37.2.

Observations and Calculations
The eight parts together approximately form a cuboid having length πr, breadth r and
height h.
∴ the volume of the cuboidal block = πr x r x h = πr²h.
Hence, the volume of the cylinder = πr²h.

Result
The volume of a right-circular cylinder of height h and base radius r is given by πr²h.