Ask your own question, for FREE!
Mathematics 8 Online
OpenStudy (winsteria):

medal and fan help

OpenStudy (winsteria):

OpenStudy (winsteria):

@dmezzullo

OpenStudy (winsteria):

help? :(

OpenStudy (jtvatsim):

Do you know the formula for the volume of a cone?

rishavraj (rishavraj):

see u got Volume and height of the cone... so u can calculate the radius ... and once u get the radius find the area :))

OpenStudy (winsteria):

yes. and I did it and I got a estimate of what it could be but idk and i only have 20 mins left ..

OpenStudy (jtvatsim):

what was your estimate that you got?

OpenStudy (winsteria):

the first one i'm probably wrong though

rishavraj (rishavraj):

@winsteria whts the radius u got??

OpenStudy (winsteria):

i dont even know

jimthompson5910 (jim_thompson5910):

You can also use the idea \[\Large V = \frac{1}{3}*A*h\] V = volume of cone A = area of circular base h = height of cone In this case, V = 52 A = unknown h = 8 Using this method, you don't need to find the radius.

OpenStudy (winsteria):

52=1/3*a*8

jimthompson5910 (jim_thompson5910):

yep then solve for A

OpenStudy (winsteria):

how...

jimthompson5910 (jim_thompson5910):

I'd start by multiplying both sides by 3

jimthompson5910 (jim_thompson5910):

52=1/3*a*8 3*52=3*1/3*a*8 156 = 1*a*8 8*a = 156 a = ???

OpenStudy (winsteria):

I gt 19.5 ! Is that it ?

jimthompson5910 (jim_thompson5910):

yep 19.5 is the answer

OpenStudy (winsteria):

THANK YOU SO MUCH ILY

jimthompson5910 (jim_thompson5910):

np

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!