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 one year ago
The base of a cone has a radius of 6 cm. The slant height of the cone is 15 cm. What is the height of the cone?
 one year ago
The base of a cone has a radius of 6 cm. The slant height of the cone is 15 cm. What is the height of the cone?

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GoldPhenoix
 one year ago
Best ResponseYou've already chosen the best response.0You have to use the pythagorean theorem.

jishan
 one year ago
Best ResponseYou've already chosen the best response.1l=dw:1368934202007:dw

GoldPhenoix
 one year ago
Best ResponseYou've already chosen the best response.0Or you can use the formula that jishan gave you.

jishan
 one year ago
Best ResponseYou've already chosen the best response.1h= height of cone r= radius & l=slant height

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0Let r = radius s = slant height h = height \[\large r^2 + h^2 = s^2\] \[\large 6^2 + h^2 = 15^2\] \[\large 36 + h^2 = 225\] \[\large h^2 = 22536\] \[\large h^2 = 189\] \[\large h = \sqrt{189}\] \[\large h = \sqrt{9*21}\] \[\large h = \sqrt{9}*\sqrt{21}\] \[\large h = 3\sqrt{21}\] \[\large h \approx 13.747727\] \[\large h \approx 13.75\]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0you're very helpful and mature...
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