how to do 4 b I attempted and failed as seen in pic

[tranquil idol]

What she said

[woven turret]

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[weak socket]

You have $V=\frac{4\pi}{3}r^3$, so $\dv{V}{t}=4\pi r^2\dv{r}{t}$. You know $\dv{V}{t}$, and want to find $\dv{r}{t}$

[wind moat]

Omegabet_

[weak socket]

So use the fact V=1500 to determine r, as that's the only thing remaining

then just solve for dr/dt and evaluate

[tranquil idol]

did u not see my work

i already did that

can someone pls tell me what i did wrong and what to do correct

[knotty helm]

im guessing you typed 4500/4 pi in your calculator and didn't put parentheses around the denominator
so it gave (4500/4)*pi
which is 3534
the actual division is like 360

[weak socket]

You rounded in the middle of the computation

[tranquil idol]

in my calculator i did not

[tranquil idol]

ill try tjay

[weak socket]

On the page you did

[tranquil idol]

how does that matter

i just didn’t want to write all the numbers

[weak socket]

I can't see you use your calculator

So I can only comment on what is on the page

[tranquil idol]

ok ?

[weak socket]

You asked what you did wrong

That's the answer

[tranquil idol]

huh

[weak socket]

Huh

[tranquil idol]

bruh why r u saying irrelevant things

if u don’t know be quiet

[weak socket]

I literally told you what you did wrong based on what you posted

[tranquil idol]

ok tjen be quiet and i’ll ask someone else

[weak socket]

Sure, let Bargy Mcgee handle it

[tranquil idol]

bruh what

[tranquil idol]

im pretty sure this is what i did wrong

have to test it out

[tranquil idol]

Yea that is what I did ring

Wrong

Thanks @knotty helm

[cedar rampart]

@tranquil idol has given 1 rep to @knotty helm