Subject: General Aptitude · Chapter: Volume and Surface Area · Exam: · Marks: · Difficulty:
If the height of a cone be doubled and radius of base remains the same, then the ratio of the volume of the given cone to that of the second cone will be
(a)1 : 2
(b)2 : 1
(c)1 : 8
(d)8 : 1
Answer
Answer (as printed): A
Explanation
Required ratio $=\frac{\frac{1}{3} \pi r^{2} h}{\frac{1}{3} \pi r^{2} \times(2 h)}=\frac{1}{2}$.
Explanation as extracted from the printed page; notation may be imperfect.