Question

the diameter of a roller is 3 cm and its length is 42 CM the volume of wood required to make the role is ​

Answer 1

Answer:

using this formula 2πrh

396 answer.

Answer 2

The volume of the roller would be 297 cm³

1) Since the shape of a roller is cylindrical, we can use the formulae for volume of a cylinder :πr²h

2) Given the diameter = 3 cm

radius = 3/2 = 1.5 cm

and Height = 42 cm

3) Volume of the roller would be volume = π* (1.5) ²*42

4) volume = 22/7 *2.25*42  = 297 cm³