Mathematics
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OpenStudy (anonymous):
Find the lateral area of the solid figure.
12√7pi sq. in.
48pi sq. in.
60pi sq. in.
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OpenStudy (anonymous):
@dtuniyants
OpenStudy (anonymous):
yes just a sec
OpenStudy (anonymous):
do you want an answer, or an explanation?
OpenStudy (anonymous):
both cause sometimes i get too confused
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OpenStudy (anonymous):
@SolomonZelman
OpenStudy (anonymous):
lteral surface area is total surface area minus bases
OpenStudy (anonymous):
I just don't know how to find the surface area of cone. sorry
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OpenStudy (anonymous):
I found the formula for its surface area
A=pi*r(r+sqrt(h^2+r^2)
OpenStudy (solomonzelman):
lol, the google gets a gold medal
OpenStudy (anonymous):
just plug in values of r and h
OpenStudy (anonymous):
I got approximately 301.59
OpenStudy (anonymous):
just sec I'll write solution for exact answer
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OpenStudy (anonymous):
\[A=\pi*6(6+\sqrt(64+36))=\pi*6(6+10)=16*6*\pi=96\pi\]
OpenStudy (anonymous):
do you have such answer @hhelpplzzzz
OpenStudy (anonymous):
nope, the ones on top are the only ones
OpenStudy (anonymous):
that's strange. but none of these work. they don't result ~~301.59
OpenStudy (anonymous):
even google says so
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OpenStudy (anonymous):
sorry
not surface area LATERAL AREA
OpenStudy (anonymous):
96pi-(pi*6^2)=96pi-36pi=60pi
OpenStudy (anonymous):
the answer is 60pi
OpenStudy (anonymous):
thank you very much:))
OpenStudy (anonymous):
make sure you are using the right height, because the cone height is different from the lateral height
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OpenStudy (anonymous):
oh, nvm