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Mathematics 9 Online
OpenStudy (cookiegirl):

Which measure is closest to the volume of the cylinder? http://static.k12.com/calms_media/media/1415500_1416000/1415932/1/293892e03f88df833e7175592cdf9041487f4b9c/67555_FGA_U7_L8_V1_P.jpg A. 226 cm³ B. 432 cm³ C. 1356 cm³ D. 5426 cm³

OpenStudy (rational):

find the area of base then multiply by the height

OpenStudy (rational):

look at the base, it is just a circle of radius 6 knw how to find the area of circle ?

OpenStudy (cookiegirl):

Umm not really im not the best at math.... sorry im not helpful ._.

OpenStudy (rational):

thats okay, you can learn it easily

OpenStudy (rational):

start by looking up "area of circle" formula see if u can find it in ur notes as i seem to have forgotten..

OpenStudy (cookiegirl):

it says A≈113.1 i typed in 6 as the radius

OpenStudy (rational):

thats right! for volume, simply multiply that base area by the height

OpenStudy (rational):

look at the given cylinder for the height

OpenStudy (cookiegirl):

ok i got 1357.2

OpenStudy (rational):

Perfect!

OpenStudy (cookiegirl):

so now what do i do?

OpenStudy (rational):

we're done! look at the options and pick the one that matches

OpenStudy (cookiegirl):

ok thank you for helping me! u deserve a medal for being awesome :)

OpenStudy (rational):

no, you deserve lot of cookies for learning it so fast :)

OpenStudy (cookiegirl):

lol

OpenStudy (triciaal):

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