Question

find the volume.
a cone with a radius of 20mm and a height of 24mm

Answer 1

V= πr^2(h/3)
V=π(20^2)(24/3)
V=10053.1

Answer 2

V= πr^2(h/3)
V=π(20^2)(24/3)
V=10053.1
10053.1mm

Answer 3

how do you find out if was h/3

Answer 4

h/3 is always a part of the equation to find the volume of a cone. The volume of a cone is found by using the formula πr^2(h/3)

Answer 5

That is correct what @hockeychick23 said. It's part of the formula.

Answer 6

so you would just plung in the missing numbers and work it on from there

Answer 7

Yes

Answer 8

correct :)

Answer 9

oh ok so if i have diameter of 22 and a height of 16ft. it would b the same as last time?

Answer 10

well for that one you need to divide the diameter by 2 to get the radius and use the same formula. so your radius is 11 for this one.

Answer 11

Radius is Diameter/2. So the radius would be 11.

Answer 12

so you would multiply the height by 3.14

Answer 13

correct :) so you do:
V= π11^2(16/3)
V=π 121(16/3)
V=2027.37

Answer 14

what if they only give u a radius ?

Answer 15

you cant solve it without a radius and a height if you are given a cone unless they give you the volume

Answer 16

or the diameter instead of the radius, that works just as well

Answer 17

it say a sphere with a radius of 16cm?

Answer 18

sphere volume is a different equation, for a sphere you use:
V= 4/3πr^3

Answer 19

opps i mean 18

Answer 20

Ok no problem, so V=4/3π(18^3)

Answer 21

you will then get 24,429.02

Answer 22

oh ok so it would b v=4/3 = 1*3.14(18^3)

Answer 23

correct!

Answer 24

oh ok. so just plug in the numbers then multiple it by 3.14?

Answer 25

yepp :)

Answer 26

oh ok i think i got it now thank you!!!

Answer 27

sure!(: