Get our expert's

answer on brainly

SEE EXPERT ANSWER

Get your **free** account and access **expert** answers to this and **thousands** of other questions.

I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your **free** account and access **expert** answers to this and **thousands** of other questions

They want us to minimize the surface area, given a constraint on the volume.

\[\huge A=2 \pi r^2+1000\]

\[\huge 0=4\pi r-1000r\]

am i doing it right so far (that is the derivative)

yes that's what I took the derivative of

Nope, i made a mistake in the quotient rule

How do i solve for 'x' now?

For r?
Set equal to zero as you did.
Then get a common denominator, turn it into one big fraction.

oh yes okay !

wut u mean its simple, solve for it, remember pi is just some constant

^ he means multiply by pi^2 but u get the point

no, he put pi^2 on the bottom as a mistake.

oh i see

i was wondering why hed ask for help to solve that xD

heh