Medals Awarded - Which of the following is the volume of the cylinder below? (Image Attached Below) Help

Question

anonymous · Answer

attachment

unanimoose · Answer

$$V = \pi r^2 h$$

unanimoose · Answer

So: $$V \approx 3.14(9^2 \times 23)$$

anonymous · Answer

yeah nut my answer is some long decimal @Unanimoose

unanimoose · Answer

Yeah you can just round it.

unanimoose · Answer

Most of the time it's just an approximate solution which is totally fine.

anonymous · Answer

round 5,849.82 to what though? @Unanimoose

unanimoose · Answer

$$9^2 = 81$$
3.14(81 * 23)
3.14(1863)

So you leave the pi there. That was your mistake. :)

unanimoose · Answer

It's 1863 times pi.

unanimoose · Answer

Sometimes you should try to leave it there if some answer choices have pi in them, which means it hasn't been distributed yet.

anonymous · Answer

okay and i got 5,849.82 @Unanimoose

unanimoose · Answer

But yes if you had to insert pi then what you got at first would be the solution, but in this case it has not been multiplied quite yet.

unanimoose · Answer

One of the choices is 1863(pi). This is the same as you solution but without multiplying pi yet.

unanimoose · Answer

Do you get it now?

anonymous · Answer

okay so is it units cubed or squared @Unanimoose

unanimoose · Answer

Cubed. It would be squared with 2D shapes, but this is 3D so it will always be cubed. ^_^

anonymous · Answer

thanks @Unanimoose 
++

unanimoose · Answer

Np. :)

anonymous · Answer

hold up 1863 pi units cubed @Unanimoose  sorry

unanimoose · Answer

The cubing won't be applied. The solution is just: $$1863 \pi^3$$

unanimoose · Answer

You won't have to apply the cube unless told so, which is unlikely.