can someone remind me how to find the volume of a cone using 3.14??

Question

anonymous · Answer

area of a cone = 1/3 pi a^2 h
where h is the height and a is the area of the base

anonymous · Answer

$$1/3*\pi*r^2*h$$

anonymous · Answer

I think i tried to do the formula lenght times (1/2 *r*pi)
let me try the 1/3 and see what i get
thank you

anonymous · Answer

welcome

anonymous · Answer

$$\pi=3.14$$

anonymous · Answer

lol. yea i remembered that. Its been 2 years since I took college Algebra. Havent used it and have forgotten most of my formulas. 
howver, answers to choose from are 
18 cu in
23 cu in
29 cu in
37 cu in
42 cu in

When I calcualted this came up with 29.30667???

anonymous · Answer

They must be rounding the answer?? huh?

anonymous · Answer

$$1/3 *\pi*radius ^{2}* height$$