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Mathematics 17 Online
OpenStudy (isuckatschool43):

Need help with geometry. I will fan and medal!

OpenStudy (isuckatschool43):

A cone has a radius of 5 inches and a height of 18 inches. What is the exact volume of the cone? I got 471.24in^3 but apparently that was wrong and it is not the exact volume

OpenStudy (isuckatschool43):

(1/3)(pi)(5^2)(18) =471.24

OpenStudy (isuckatschool43):

I don't know what I did wrong with the math.

OpenStudy (asett):

so to find the volume of a cone, remember the equation is V = pi * r^2 * (h/3) Does that help? I think you just have the equation wrong. Let me know what your answer is and I'll check it for you. :)

OpenStudy (asett):

You know what? I'm getting 471.24 cubic inches as well, are you sure you're measurements are correct?

OpenStudy (isuckatschool43):

Yeah, that is what the measurements are stated as.

OpenStudy (asett):

Oh, don't round your answer. What value of pi are you using? 3.14? 3.1415?

OpenStudy (isuckatschool43):

471.23889803 thats with all the decimals im just using the pi symbol on a calculator

OpenStudy (isuckatschool43):

so thats the exact volume

OpenStudy (asett):

471.23889803846896 This is the value that I'm getting. How many tries do you have? I would try your first, the 471.23889803 one.

OpenStudy (isuckatschool43):

i have one more, but i have to go, so can i put it here with my answer?

OpenStudy (asett):

Sure! Do what you gotta do!

OpenStudy (isuckatschool43):

A storage tank holds 235,500 in^3 of a chemical. The chemical is dispensed to completely fill 25 identical cylindrical containers, each with a radius of 5 in. What is the height of the cylindrical containers? Use 3.14 to approximate pi.

OpenStudy (isuckatschool43):

ill be back as soon as i can thanks for the help

OpenStudy (asett):

No prob

OpenStudy (isuckatschool43):

okay im back @asett

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