The volume of a cone is 251.2 cubic inches. The height of the cone is 15 inches. What is the radius of the cone, rounded to the nearest inch? Use pi = 3.14.
16 inches
8 inches
6 inches
4 inches
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OpenStudy (cggurumanjunath):
Do you know what is the formula for finding volume of cone ?
OpenStudy (spring98):
nope
OpenStudy (cggurumanjunath):
Okay, not a problem let me explain it to you . :)
OpenStudy (cggurumanjunath):
The volume of cone is given by the formula. V = 1 / 3 * pi * r ^2 * h
OpenStudy (cggurumanjunath):
Is that clear to you @Spring98 ?
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OpenStudy (spring98):
yes but i don't know how to get the answer
OpenStudy (cggurumanjunath):
Here V is given as 251.2 cubic inches. and can you tell me , what is the value of h given ?
OpenStudy (cggurumanjunath):
Here V = Volume , r = radius , h = height .
OpenStudy (cggurumanjunath):
Are you working on it ? @Spring98
OpenStudy (spring98):
yes
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OpenStudy (cggurumanjunath):
h = ?
OpenStudy (spring98):
I got 6 in am I right?
OpenStudy (cggurumanjunath):
Do you need any help in finding " h " ?
OpenStudy (spring98):
^
^
^
OpenStudy (cggurumanjunath):
Can you please recheck your answer ?
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OpenStudy (cggurumanjunath):
I will help you out . h = ?
OpenStudy (spring98):
i really don't know
OpenStudy (cggurumanjunath):
Please read the question .
OpenStudy (cggurumanjunath):
The value of
"h " is given in the question .
OpenStudy (spring98):
15in
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OpenStudy (cggurumanjunath):
Good.
OpenStudy (spring98):
for my answer i got 4 am i right?
OpenStudy (cggurumanjunath):
:)
OpenStudy (cggurumanjunath):
Yes, you got it .
OpenStudy (spring98):
thanks!! >.<
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