Subject: General Aptitude · Chapter: Volume and Surface Area · Exam: 2006 · Marks: · Difficulty:
The volume of a right circular cylinder, 14 cm in height is equal to that of a cube whose edge is 11 780 cm. The radius of the base of the cylinder is
(a)5.2 cm
(b)5.5 cm
(c)11 cm
(d)22 cm
Answer
Answer (as printed): B
Explanation
Volume of the cylinder = Volume of the cube = (11)3 cm3 = 1331 cm3. Let the radius of the base be r cm. Then, 22 2 2 1331 121 11 × r × 14 = 1331 ⇒ r = = ⇒r= = 5.5. 7 44 4 2
Explanation as extracted from the printed page; notation may be imperfect.