Sail E0 Webinar

 A right triangle with sides 3 cm, 4 cm and 5 cm is rotated the side of 3 cm to form a cone. The volume of the cone so formed is:

A .    \(12\pi\) cm3
B .     \(15\pi\)cm3
C .    \(16\pi\) cm3
D .    \(20\pi\) cm3
Answer: Option A

 A Right Triangle With Sides 3 Cm, 4 Cm And 5 Cm Is Rotated...

Clearly, we have r = 3 cm and h = 4 cm

So \(Volume,= \frac{1}{3}\pi r^{2}h = \left(\frac{1}{3}\times \pi\times3^{2}\times4\right)cm^{3} =12\pi cm^{3}.\)

Was this answer helpful ?
Next Question

Submit Solution

Your email address will not be published. Required fields are marked *

More Questions on This Topic :

Latest Videos

Latest Test Papers