anonymous
  • anonymous
http://img861.imageshack.us/i/page741.jpg/ Can some one help me please!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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dumbcow
  • dumbcow
For #20 volume of a cone is 1/3 volume of cylinder cylinder: V=pir^2*h cone: V = 1/3pi*r^2*h so 2/3 of the space is outside cone but inside cylinder #21 im not quite sure about what dimensions the numbers given in figure refer to?
anonymous
  • anonymous
the base and the height of the cone is the same cylinder?
anonymous
  • anonymous
20 is look the smae to me

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dumbcow
  • dumbcow
yes, it says they share the same base and height
anonymous
  • anonymous
21) I think the question is find volum a pyramid, I can fid it , but subtrac the cone it hard to tell how much the cone is overlap
dumbcow
  • dumbcow
it says the base of cone is inscribed in the square or base of pyramid so there is no overlap, its like the 2 bases are pressed together
anonymous
  • anonymous
Can you show me how to find Volum?
anonymous
  • anonymous
it mean find volum of cone?
dumbcow
  • dumbcow
ok volume of cone is 1/3*pi*r^2*h slant height = 12 all we need is the radius. do you know what the 8 and 10 refer to?
anonymous
  • anonymous
the base is 10 square is mean radius square is 5 ? and use 5 to find Valume of cone?
anonymous
  • anonymous
1/3*pi*5^2*h I know how to find the h
dumbcow
  • dumbcow
oh ok i see it now. yes you are correct just use pytharean theorem to get height
anonymous
  • anonymous
12^2-5^2=10.9 the h of cone ,am I righ?
dumbcow
  • dumbcow
correct
anonymous
  • anonymous
OK. thank
dumbcow
  • dumbcow
your welcome

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