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

A `2r` 
B `2/r` 
C `2r^2` 
D `2/r^2` 

+ Answer
B 

+ Explanation
Curved surface Area 

`= 2πrh`

`= (πr^2h). 2/r`

`= (Volume xx 2/r)`

+ Report

Irin Moni

Editor, VCampus

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