Subject: General Aptitude · Chapter: Volume and Surface Area · Exam: 2007 · Marks: · Difficulty:
The radii of the bases of two cylinders are in the ratio 3 : 5 and their heights are in the ratio 2 : 3. Find the ratio of their curved surface areas.
Answer
Answer (as printed):
Explanation
Let the radii of the cylinders be 3x, 5x and their heights be 2y, 3y respectively. 2π × 3 x × 2 y 2 Then, Ratio of their curved surface areas = = = 2 : 5. 2π × 5 x × 3 y 5
Explanation as extracted from the printed page; notation may be imperfect.