Question : A cylindrical tank of capacity $64\pi$ litres has equal height and radius. What would be the radius of the cylinder? (1 litre = 1000 cm3)
Option 1: 5 cm
Option 2: 40 cm
Option 3: 50 cm
Option 4: 4 cm
Correct Answer: 40 cm
Solution :
Let the height and radius of the cylinder be $x$.
Given volume = $64\pi$ litres = $64000\pi$ cm
3
We know that,
Volume of the cylinder = $\pi r^2h$
So, $\pi\times x^2\times x=64000\pi$
⇒ $x^3=64000$
$\therefore x= 40$
Hence, the correct answer is 40 cm.
Related Questions
Know More about
Staff Selection Commission Sub Inspector ...
Result | Eligibility | Application | Selection Process | Cutoff | Admit Card | Preparation Tips
Get Updates Brochure
Your Staff Selection Commission Sub Inspector Exam brochure has been successfully mailed to your registered email id “”.
