Question

21. The diameter and height of a cylinder and a cone are equal. What is the
ratio of their volume.

22. A cylinder, a cone and a hemisphere are of equal base and have the
same height. What is the ratio in their volumes?

23. A bicycle wheel makes 5000 revolutions in moving 10 km. Write the
perimeter of wheel

Answer 1

Answer 21:
 3:1


Answer 22:

3 : 1 : 2


Answer 23:

2 meters