S=2πr^2+2πrh solve for π

Question

mathlegend · Answer

Can't you factor out π?

anonymous · Answer

I am totally clueless on this. Terrible at math, taking a developmental course to improve, but the instructor likes to give work he has not covered to see what we can do.

mathlegend · Answer

Well, I would consider getting up to par with factoring especially if he is giving stuff like this.
You can factor out the π since it is in both terms.

S=2πr^2+2πrh

S = π(2r^2+2rh)

Does that make sense so far? We took out π...

anonymous · Answer

I am with you so far. Makes sense to see it, you make it look easy.

mathlegend · Answer

S = π(2r^2+2rh)

When a number or variable is touching the parentheses this means multiply... so now we must divide to get pi by itself...

$$\frac{ S }{ (2r^2+2rh) }=\frac{ \pi(2r^2+2rh) }{ (2r^2+2rh) }$$

mathlegend · Answer

Now, you see that they will reduce on the right side... which gives us...

mathlegend · Answer

$$\frac{ S }{ (2r^2+2rh) }= \pi$$

mathlegend · Answer

Make sense?

anonymous · Answer

I am shaking my head at the simplicity of the explanation. You are truly a math legend. How many thank you's can I send your way?

mathlegend · Answer

:) Glad I could help! Welcome to OpenStudy!!!

anonymous · Answer

Thank You! You have helped more than you know!