ABC26GN4896 · Volume and Surface Area

Subject: General Aptitude · Chapter: Volume and Surface Area · Exam: · Marks: · Difficulty:

The curved surface area of a right circular cylinder of base radius $r$ is obtained by multiplying its volume by

(a)$2 r$

(b)$\frac{2}{r}$

(c)$2 r^{2}$

(d)$\frac{2}{r^{2}}$

Answer

Answer (as printed): B

Explanation

Curved surface area $=2 \pi r h=\left(\pi r^{2} h\right) \cdot \frac{2}{r}=\left(\right.$ Volume $\left.\times \frac{2}{r}\right)$.

Explanation as extracted from the printed page; notation may be imperfect.