Find the volume of a cone with a base radius of
4yd
and a height of
12yd
. Write the exact volume in terms of
π
, and be sure to include the correct unit in your answer.
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OpenStudy (jhannybean):
Volume of a cone:\[V=\pi r^2 \left(\frac{h}{3}\right)\]
OpenStudy (anonymous):
201.06
OpenStudy (anonymous):
is it cubed or squared
OpenStudy (jhannybean):
So \[V= \pi (4yd)^2\left(\frac{12yd}{3}\right)\]
OpenStudy (jhannybean):
And I don't know the answer :P Just working off from what you have in your equation so I can't really confirm your answer, haha.
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hartnn (hartnn):
yd is yards
you can ignore that while using the equation
\(V= \pi (4)^2\left(\frac{12}{3}\right)\)
OpenStudy (jhannybean):
Oh was that yards
OpenStudy (jhannybean):
Haha whoops xD
OpenStudy (anonymous):
I plugged in the numbers and got 201.06 but for my answer i have to have the correct unit
hartnn (hartnn):
don't put the value of pi
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hartnn (hartnn):
just evaluate
\(\Large 4^2 \times \dfrac{12}{3}\)
OpenStudy (jhannybean):
You're solving in terms of pi, meaning youll have some number * \(\pi\)
OpenStudy (jhannybean):
as your answer.
OpenStudy (anonymous):
oh so i take 4^2 multiplied by 12/3 then
hartnn (hartnn):
what did u get ?
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