anonymous
  • anonymous
The volume of a cone is 62.8 cubic inches. The height of the cone is 15 inches. What is the radius of the cone, rounded to the nearest inch? Use π = 3.14.
Mathematics
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
@mathmath333
anonymous
  • anonymous
@ganeshie8
anonymous
  • anonymous
@Rushwr

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More answers

Rushwr
  • Rushwr
\[V= \Pi r ^{3}\frac{ h }{ 3 }\]
Rushwr
  • Rushwr
This is the volume of the cone . We just have to substitute the numbers here !
anonymous
  • anonymous
ok!
welshfella
  • welshfella
Volume of a cone = (1/3) pi r^2 h where r = radius and h = height so plug in the given values 62.8 = (1/3) * 3.14 * r^2 * 15 solve for r
Rushwr
  • Rushwr
Since they have asked us the radius in inches no need to convert the height and the radius in to meters.
welshfella
  • welshfella
@Rushwr - is that a typo ? r^2 not r^3
anonymous
  • anonymous
ok i get it just trying to figure it out
Rushwr
  • Rushwr
oh pellet sorry
Rushwr
  • Rushwr
human error kid ! it is r^2
Rushwr
  • Rushwr
Sorry abwt tht! I actually thought I typd 2
welshfella
  • welshfella
don't worry we all do it sometimes...
Rushwr
  • Rushwr
So at the end the answer would be 2 inches !
welshfella
  • welshfella
yes
anonymous
  • anonymous
alright i got the answer thanks a lot guysss
welshfella
  • welshfella
yw

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