DOES ANYONE KNOW VOLUMES? CAN SOMEONE CHECK MY ANSWERS PLEASE!!!
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OpenStudy (anonymous):
what is it
OpenStudy (narissa):
what is the approximate volume of a cylinder with a diameter of 14m and a height of 10m use 3.14 for pi i picked 1538.6m^3
OpenStudy (narissa):
the others answers are---219.8^3, 439.6m^3, 6154.4^3
OpenStudy (narissa):
next question what is the exact volume of a cylinder that has a radius of 9.2 in and a height of 3.7 in i picked 983.85tt in^3
OpenStudy (narissa):
next question----what is a volume of a cone that has a radius of 4cm and a height of 9 cm use 3.14 to approximate pi and express your answer in the hundreths i picked 150.8
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OpenStudy (narissa):
next question ---what is the exact volume of a sphere that has a radius of 7.5 ft i picked 1767.15 tt ft^3
Nnesha (nnesha):
done or you have more ??
OpenStudy (narissa):
next question ---what is the volume of a sphere that has a diameter of 42cm use 3.14 to approximate pi and answer in hundreths i picked 1765.15 cm^3
OpenStudy (narissa):
thats it
Nnesha (nnesha):
post one question at a time
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Nnesha (nnesha):
letz do first one
OpenStudy (narissa):
ok
OpenStudy (narissa):
u mean post it again
Nnesha (nnesha):
nope
OpenStudy (narissa):
ok
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Nnesha (nnesha):
for first one
formula of cylinder \[\huge\rm v = \pi \times r^2 \times h\]
they gave u the diameter
but in the formula u have r
which is radius
remember radius is half of diameter
so first divide diameter by 2
and the substitute all values into th formula and solve
Nnesha (nnesha):
the*
OpenStudy (narissa):
1538.6
Nnesha (nnesha):
yes right
Nnesha (nnesha):
2nd question is same do that and let me know wh at you get
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Nnesha (nnesha):
ohh wait
OpenStudy (narissa):
245.83 if its same as the first one?
OpenStudy (narissa):
never mind because it says exact
Nnesha (nnesha):
yes so what's the answer for 2nd one ??
OpenStudy (narissa):
dont know how to find exact
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OpenStudy (narissa):
is the same formula?
Nnesha (nnesha):
yes right same type of question so yes
OpenStudy (narissa):
im going to medal u and repost this one thanks a whole lot!!!!
Nnesha (nnesha):
exact mean not converting into decimal
OpenStudy (narissa):
then its 245.83???????
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Nnesha (nnesha):
nope show your work
that's not right
how did you plug values ?
OpenStudy (narissa):
I put 3.14 *4.6^2*3.7
Nnesha (nnesha):
4.6 ??
OpenStudy (narissa):
i divided 9.2 by 2
Nnesha (nnesha):
radius is half of diameter but they already gave u the radius
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OpenStudy (narissa):
so its 3.14 * 9.2 * 3.7???
Nnesha (nnesha):
r^2
so 9.2^2
OpenStudy (narissa):
983.34
OpenStudy (narissa):
???
Nnesha (nnesha):
yep right
do you have answer choices for that ?
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OpenStudy (narissa):
noo
Nnesha (nnesha):
exact value would be 983
i guess bec of *not converting into decimal *
OpenStudy (narissa):
k thanks can u help with the others or no?
Nnesha (nnesha):
volume of cone use this formula \[\huge\rm v =\frac{ 1 }{ 3 } \pi \times r^2 \times h\]
OpenStudy (narissa):
k the answer should be 452.16 but it says to hundreths place????
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Nnesha (nnesha):
yes two number of decimal
OpenStudy (narissa):
am i right but is hundreths before or after decimal?
OpenStudy (narissa):
so it would be 452
Nnesha (nnesha):
that's not right
how did you plug that one ?
OpenStudy (narissa):
i'm confused! i did 3.14* 4*4 * 9 =452.16
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Nnesha (nnesha):
\(\color{blue}{\text{Originally Posted by}}\) @Nnesha
volume of cone use this formula \[\huge\rm v =\frac{ 1 }{ 3 } \pi \times r^2 \times h\]
\(\color{blue}{\text{End of Quote}}\)
formula to find VOLUEM OF CONE
replace are and h by their values
Nnesha (nnesha):
not are
r*
Nnesha (nnesha):
there is 1/3
OpenStudy (narissa):
oops!
OpenStudy (narissa):
432??
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OpenStudy (narissa):
then to hundredths would be400????
Nnesha (nnesha):
nope that's not right
452.16 divide by 3 ?
OpenStudy (narissa):
151.053
OpenStudy (narissa):
@Data_LG2
Nnesha (nnesha):
look it there again what number did you plug into the calculator
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OpenStudy (narissa):
oh I thought u left!!!!!
Nnesha (nnesha):
a*
OpenStudy (narissa):
now got 150.72
OpenStudy (narissa):
so it would be 151????
Nnesha (nnesha):
nope hundreths place
which suppose to be 2 number after decimal
so 150.72 is right
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OpenStudy (narissa):
k thanks!!!
Nnesha (nnesha):
np
OpenStudy (narissa):
im going to post again if u want to help i will medal u again but thanks again!!!