anonymous
  • anonymous
Could you help me with this?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
Which would help to calculate the volume of the composite figure shown?
1 Attachment
anonymous
  • anonymous
first could you tell me what shape that is?
anonymous
  • anonymous
it looks like a prism...

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anonymous
  • anonymous
no idea what kind though
anonymous
  • anonymous
Anyone know what formula i would use to solve this?
hartnn
  • hartnn
that seems like the combination of prism and a semicirclular figure with uniform height ... do you have the dimensions ?
anonymous
  • anonymous
^that's needed. rough idea would be base area x height..so dimensions would be fantastic
anonymous
  • anonymous
nope, it doesnt come this the dimensions, the question is asking what formula to use and i dont know which formula that is... here are the answers...
anonymous
  • anonymous
base times side one-half times pi times diameter times height one-third times length times width times height pi times radius times slant height
anonymous
  • anonymous
i am sorry dear moderator. i had no idea i unconsciously stated an answer. please don't ban me again
hartnn
  • hartnn
lets see... semicicular region, area = 1/2 pi radius ^2 |dw:1372858384560:dw|
hartnn
  • hartnn
you did state the answer ? i missed it!
anonymous
  • anonymous
let's keep it that way then
anonymous
  • anonymous
hartnn, i dont really understand what you drew?
anonymous
  • anonymous
The base is a rectangle if thats what you were asking
hartnn
  • hartnn
i drew the base region, sorry for my bad drawing :P
anonymous
  • anonymous
oh okay :p so you think the formula is area = 1/2 pi radius ^2 ?
hartnn
  • hartnn
thats just for semicircular part... but we need to add the area of rectangle too (1/2 pi r^2) + (2r)*(other side) but you choices do not contain the + (addition) part ..:\
anonymous
  • anonymous
oh :/ just from the answers which one would you think it is?
hartnn
  • hartnn
let me guess, the answer must contain 'pi' due to circular region, so 2nd and 4th alternative but they only differ by the word 'slant' ! (because half of diameter = radius)
hartnn
  • hartnn
are you sure, choices are correct ? because a volume should contain '3' dimension of length!
anonymous
  • anonymous
I would say its B and yes these are the correct answers
anonymous
  • anonymous
because once you have done the half circle there isnt anything that has to be done with a slant
hartnn
  • hartnn
see, your choices a,b,d have only 2 dimensions of length, they all are AREAS!
anonymous
  • anonymous
ooooohhh...
hartnn
  • hartnn
only choice 'c' is volume but it doen't contain pi :\
hartnn
  • hartnn
if the 1st choice is base 'area' times side, then it can be the answer
anonymous
  • anonymous
Yeah i would actually say its C and yes it does the answer on my screen is 1/3TTr^2h
anonymous
  • anonymous
the TT is pi
anonymous
  • anonymous
I guess i did mess up the answers sorry :/
hartnn
  • hartnn
ohh..but 'c' didn't describe 1/3 pi r^2 h... anyways, no problem :)
anonymous
  • anonymous
Thank you so much!
hartnn
  • hartnn
welcome ^_^

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