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Mathematics 21 Online
aidenj:

math help

aidenj:

1 attachment
Tandygirl:

Step by step

Tandygirl:

I break it down with y

cseltzer:

sorry I don't know this stuff btw I do edmentem too

Tandygirl:

im in middle school

Tandygirl:

so ik half dis stuff

cseltzer:

same

cseltzer:

6th grade

cseltzer:

:(

Tandygirl:

ik half dis stuff i helped alot of people today

Florisalreadytaken:

lets do it 1 by 1 1) a cone with a radi of 12 units and a height of 6 units. \[ V=\pi r^{2} \frac{h}{3} \] where \[ r=12 \] \[ h=6 \] that said, we get this: \[ V=\pi \times 12^{2} \times\frac{6}{3} \] \[\Large V=??\]

aidenj:

904.8

aidenj:

pls tell me im right

Florisalreadytaken:

yes but no -- leave it as it is in \( \pi \) form

aidenj:

3.14

Florisalreadytaken:

lets do it this way what is \( 12^{2} \times\frac{6}{3} \) ?

aidenj:

288

Florisalreadytaken:

yes -- that times \( \pi \) so we get \( 288 \pi \) which is the 1st column

Florisalreadytaken:

2) a cylinder with a diameter of 12 units and a h of 27 units. \[ V=\pi r^{2} h \] where \[ r= \frac{1}{2} of diameter \Rightarrow 6 \] \[ h=27 \] thus: \[ V=\pi \times 6^{2} \times 27 \] \[\Large V=??\]

aidenj:

927

aidenj:

i meant 972

Florisalreadytaken:

dont forget the \( \pi\) so yes that one belongs to the 2nd column 3) a sphere with a diameter of 12 units \[ V=\frac{4}{3} \pi r^3 \] where \[ r= \frac{1}{2} \text{ of diameter} \Rightarrow 6 \] thus, \[ V=\frac{4}{3} \pi \times 6^3 \] \[\Large V=??\]

aidenj:

288

Florisalreadytaken:

\( 288 \pi \) correct, so first column 4) a cylinder with a diameter of 8 units and a height of 18 units \[ V=\pi r^2 \ h \] where \[ r= \frac{1}{2} \text{ of diameter} \Rightarrow 4 \] \[ h=18 \] thus, \[ V=\pi \times 4^2 \times 18 \] \[\Large V=??\]

aidenj:

288

aidenj:

and isnt the next one 972

Florisalreadytaken:

@aidenj wrote:
288
correct -- so 1st column 5) a sphere with a diameter of 12 unradius of 9 units. \[ V=\frac{4}{3} \pi r^3 \] where \[ r=9 \] thus, \[ V=\frac{4}{3} \pi \times 9^3 \] \[\Large V=972 \pi\] correct! so 2nd column

aidenj:

thank u so much

Florisalreadytaken:

cone is left -- u do it

Florisalreadytaken:

the last one

aidenj:

i did

aidenj:

sry lag

aidenj:

288

Florisalreadytaken:

what? no -- try again

aidenj:

which cone

Florisalreadytaken:

im talking about the "a cone with a diameter of 18 units and a height of 36 units"

aidenj:

oh yeah 972

Florisalreadytaken:

mhm well done!

aidenj:

tys

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