Tick (✓) the correct answer:


Tick (✓) the correct answer:

The number of coins, each of radius 0.75 cm and thickness 0.2 cm, to be melted to make a right circular cylinder of height 8 cm and base radius 3 cm is

(a) 460

(b) 500

(c) 600

(d) 640


(d) 640

Total no. of coins $=\frac{\text { volume of cylinder }}{\text { volume of each coin }}=\frac{\pi \times 3 \times 3 \times 8}{\pi \times 0.75 \times 0.75 \times 0.2}=640$

Leave a comment


Click here to get exam-ready with eSaral

For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.

Download Now