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.

Question

anonymous · Answer

@mathmath333

anonymous · Answer

@ganeshie8

anonymous · Answer

@Rushwr

rushwr · Answer

$$V= \Pi r ^{3}\frac{ h }{ 3 }$$

rushwr · Answer

This is the volume of the cone . We just have to substitute the numbers here !

anonymous · Answer

ok!

welshfella · Answer

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 · Answer

Since they have asked us the radius in inches no need to convert the height and the radius in to meters.

welshfella · Answer

@Rushwr - is that a typo ?  r^2 not r^3

anonymous · Answer

ok i get it just trying to figure it out

rushwr · Answer

oh pellet sorry

rushwr · Answer

human error kid ! it is r^2

rushwr · Answer

Sorry abwt tht! I actually thought I typd 2

welshfella · Answer

don't worry we all do it sometimes...

rushwr · Answer

So at the end the answer would be 2 inches !

welshfella · Answer

yes

anonymous · Answer

alright i got the answer thanks a lot guysss

welshfella · Answer

yw