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Mathematics 9 Online
OpenStudy (anonymous):

Will give medal for help. A cone has a diameter of 24 in. and a slant height of 15 in. What is the approximate volume of the cone? Use 3.14 to approximate the value of pi. Round your answer to the nearest tenth, if necessary. (Hint: http://static.k12.com/bank_packages/files/media/06d2ee63391f7b5c60d93cb51f0c55a9.png )

OpenStudy (anonymous):

Answer choices. A. 1248.6 in3 B. 1356.5 in3 C. 2260.8 in3 D. 5425.9 in3

OpenStudy (anonymous):

@dan815 plz help me

OpenStudy (saifoo.khan):

Do you know the formula of the cone?

OpenStudy (saifoo.khan):

I mean for its volume?

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

V=1/3 (pi) r ^2

OpenStudy (saifoo.khan):

That's incomplete.

OpenStudy (anonymous):

Opps I forgot 1 piece

OpenStudy (anonymous):

V=1/3 (pi) r ^2 h

OpenStudy (saifoo.khan):

Yes. You know the slant height and the radius. Can you find the perpendicular height?

OpenStudy (anonymous):

?

OpenStudy (saifoo.khan):

|dw:1427762493545:dw|Can you find h?

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