Ask your own question, for FREE!
Mathematics 21 Online
OpenStudy (anonymous):

Help...

OpenStudy (anonymous):

OpenStudy (anonymous):

Am I correct? Just need feedback. @xapproachesinfinity

OpenStudy (anonymous):

@xapproachesinfinity

OpenStudy (xapproachesinfinity):

So what did you choose?

OpenStudy (anonymous):

I choose, 81:4

OpenStudy (xapproachesinfinity):

How did you find it?

OpenStudy (anonymous):

i just took 9 and squared it and 2 and squared it

OpenStudy (anonymous):

is it wrong?

OpenStudy (anonymous):

What did i do wrong?

OpenStudy (xapproachesinfinity):

I don't know yet, I'm just asking on what you based you answer?

OpenStudy (anonymous):

oh okay, Ill wait for you to finish the prblem

OpenStudy (anonymous):

sorry my open study is being weird, it keeps freezing and saying that I am not online..

OpenStudy (xapproachesinfinity):

oops i was switching the place lol

OpenStudy (xapproachesinfinity):

No worries!

OpenStudy (anonymous):

okay, haha thanks

OpenStudy (xapproachesinfinity):

let's use the surface area of a cone formula A=pi r(r+root(r^2+h^2) there are two things that will affect the cone size it's radius and it's height. So that will be proportional between small cone and large cone

OpenStudy (anonymous):

so ..... I don't know the height

OpenStudy (xapproachesinfinity):

radius of the small cone is 2 and the large cone is 9 So radius of the large 4.5 big than radius of so if r is the radius of the small one then radius of the large is 4.5r same for the height let h be the height of the small cone then the height for the large is 4.5h

OpenStudy (xapproachesinfinity):

Now we need to write both surface area of small and large

OpenStudy (xapproachesinfinity):

Don't worry about the height

OpenStudy (xapproachesinfinity):

|dw:1406779540710:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!