anonymous
  • 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
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
Ok what is it
anonymous
  • anonymous
Ok thx ok 1st thing how to find the volume of a cylinder??
anonymous
  • anonymous
V=r times 2 x height cubed

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anonymous
  • anonymous
ok good i remember that the 2nd thing is how to find the missing length to a triangle
radar
  • radar
Don't Pi go into that formula?
anonymous
  • anonymous
no
anonymous
  • anonymous
Wait oh I looked at my very old hw i found and it has that formula its rx2xpixheight
anonymous
  • anonymous
Ah. I was taught differently then...
anonymous
  • anonymous
oh ok
radar
  • radar
Volume of a cylinder: \[V=\pi r ^{2}h\] where r= radius, h=height, and we all know what pi is
anonymous
  • anonymous
ya cool that makes sense
radar
  • radar
mimi373, just look at it as finding the area of the circular base then multiplying by the height.
anonymous
  • anonymous
ok i understand cool
radar
  • radar
What was the question regarding the triangle. I might could help you with that.
anonymous
  • anonymous
how to find the missing length to a triangle
anonymous
  • anonymous
how to find the missing length to a triangle
radar
  • radar
What is given in the problem? Is it a special triangle like a right triangle or a iscolese or equilateral?
anonymous
  • anonymous
umright triangle i think
radar
  • 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:\[a ^{2}+b ^{2}=c ^{2}\]
radar
  • radar
Thats about all I can say about, you know the angles add up to 180 degrees.
radar
  • radar
Good luck on your test today glad you are preparing early.

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