Hi guys. Can anyone kindly help me with this:
The number of coins 1.5cm in diameter & 0.2cm thick to be melted to form a right circular cylinder of height 10cm & diameter 4.5cm is?

Question

Hi guys. Can anyone kindly  help me with this:
The number of coins 1.5cm in diameter & 0.2cm thick to be melted to form a right circular cylinder of height 10cm & diameter 4.5cm is?

anonymous · Answer

I'm assuming as a start that 16.6 coins is the answer.

anonymous · Answer

I need a formula to work with, tho

anonymous · Answer

Okay, let's build our own equations for this question. First off, what's a formula that combines between the diameter and the height of a cylinder ?

anonymous · Answer

a. first determine the final volume of the cylinder
b. determine the volume of a single coin
c. divide volume of cylinder  by volume of single coin in order to determine number of coins required
d. round up, although its entirely possible to have a fraction of a coin, no person is will ever be able to cut it exactly. to be on the safe side, write down both answer

Volume of cylinder

$$V= \pi r^2 h$$

anonymous · Answer

^ Give this guy more medals!

victor_15 · Answer

No, Four. The options are A.380 B.450 C.472 D.540
Thanks, complete idiot: but, how do i find the volume of a coin?

anonymous · Answer

whom did you call a complete idiot fam?

victor_15 · Answer

That's his username, right? @Four

anonymous · Answer

lol ma bad

victor_15 · Answer

Sorry guys, I completely forgot I had a question here. @four. @completeidiot 
So, I'm guessing 22/7 * r^2 * h = Vol of coin