2010 · Q57
The volume of a cone is equal to that of sphere. If the diameter of base of cone is equal to the diameter of the sphere, what is the ratio of height of cone to the diameter of the sphere ?
Elementary MathematicsMensuration
- A2:1
- B1:2
- C3:1
- D4:1
Explanation
(1/3)πr²h=(4/3)πr³ gives h=4r, ratio 2:1.