Question

@jim_thompson5910 mind helping me with one question? Thanks.

Answer 1

My answer comes out to something funky. Don't give me any direct answers. Please! @amistre64

Answer 2

\[V=\pi (r)^{2}h\]

Answer 3

where V is the volume, r is the radius, and h is the height

Answer 4

Ya...That's what I have I'm supposed to half the radius, right?

Answer 5

why would you halve the radius? you square it

Answer 6

Because, that's what I had to do on my other one..Unless I was finding diameter.....But anyways..I'd have:
V=pi(7) * 8
Correct?

Answer 7

the 7 is squared as the formula has a squared symbol above the brackets containing r

Answer 8

Yes, I have done that.

Answer 9

so you should have
V=pi(49) * 8

Answer 10

Yes, I have 1230.88 which I'm supposed to round to the nearest tenth and got 1230.9
Thank you.

Answer 11

well done :)

Answer 12

Ok, thanks. Also, what's the difference between these two questions. Just give me a second..

Answer 13

What's the difference between those 2? I had to half the question where the image is drawn. Why? @amorfide

Answer 14

I was finding volume for both of them...And I had to half the problem where the image was...

Answer 15

the radius goes from the centre of the circular part to the edge, the diameter goes from side to side
to get the radius from diameter you halve the diameter
to get diameter from radius you double the radius

since you wanted volume
you had to halve the diameter to get the radius

Answer 16

in the question you are doing now you are given the radius

Answer 17

@YanaSidlinskiy

Answer 18

I already found out. Thanks though!:)