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Mathematics 19 Online
OpenStudy (anonymous):

Ok I have a big TEST today and I need to make sure I know how to do this can someone help me remember cause I forget when Im nerveus

OpenStudy (anonymous):

Ok what is it

OpenStudy (anonymous):

Ok thx ok 1st thing how to find the volume of a cylinder??

OpenStudy (anonymous):

V=r times 2 x height cubed

OpenStudy (anonymous):

ok good i remember that the 2nd thing is how to find the missing length to a triangle

OpenStudy (radar):

Don't Pi go into that formula?

OpenStudy (anonymous):

no

OpenStudy (anonymous):

Wait oh I looked at my very old hw i found and it has that formula its rx2xpixheight

OpenStudy (anonymous):

Ah. I was taught differently then...

OpenStudy (anonymous):

oh ok

OpenStudy (radar):

Volume of a cylinder: \[V=\pi r ^{2}h\] where r= radius, h=height, and we all know what pi is

OpenStudy (anonymous):

ya cool that makes sense

OpenStudy (radar):

mimi373, just look at it as finding the area of the circular base then multiplying by the height.

OpenStudy (anonymous):

ok i understand cool

OpenStudy (radar):

What was the question regarding the triangle. I might could help you with that.

OpenStudy (anonymous):

how to find the missing length to a triangle

OpenStudy (anonymous):

how to find the missing length to a triangle

OpenStudy (radar):

What is given in the problem? Is it a special triangle like a right triangle or a iscolese or equilateral?

OpenStudy (anonymous):

umright triangle i think

OpenStudy (radar):

A right triangle has one of the angles = to 90 degrees, thus the term "right" triangle. The side opposite side from this right angle is the longest side and is called the hypotenuse. The following is the rule for the hypotenuse with reference to the other two sides. The hypotenuse squared is equal to the sum of the squared remaining two legs. Lets call the hypotenuse c, and the other legs, a and b then:\[a ^{2}+b ^{2}=c ^{2}\]

OpenStudy (radar):

Thats about all I can say about, you know the angles add up to 180 degrees.

OpenStudy (radar):

Good luck on your test today glad you are preparing early.

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