what is? pi r2 h...when radius=20cm and height=25cm??

Answer 1

You already asked this
http://answers.yahoo.com/question/index;_ylt=?qid=20070612105653AATR8qS&show=7#profile-info-P0lmXIkfaa

But here's the answer again anyway:

When you have a formula (in this case, the volume of a cone), it's just a matter of plugging in the variables.

(1/3)π (r^2) h =
(1/3)π (20^2) 25 =
(1/3)π (20^2) 25 =
10,000π/3 cubic centimeters

That is the exact answer. Anything else is just an approximation. Though you could of course plug in an approximation for π and multiply it by 10,000/3 to get a decimal approximation, if you wanted to.

Answer 2

pi r^2 h is the formula for the volume of a cylinder

V =pi (20)^2 (25)

V = 31400 cm^3

Answer 3

=pi x 20 x 20 x 25
=pi x 1000
=3141.6

Answer 4

V = π x 20² x 25 cm³
V = 31400 cm³

Answer 5

satisfied Pi Day Sarah! My well-known irrational song is Thirty grimy Birds, by pink warm Chili Peppers. that's about 10 seconds lengthy, and makes truly no sense in any respect! - nicely a minimum of no longer to me.

Answer 6

3.142 x 20 x 20 x 25=31420 cm

Answer 7

pi r2 h = 3.14 x 20^2 x 25

=31,400 cm^3

Answer 8

when the radius is to low the equity sets a balance of 2 degrees either side of the equilibrium 2 points make 1 devide the remainder and theres your answer. easey when you know how aint it.

Answer 9

Why do you need to ask this when you have all the answers?
pi = 3.14
r = 20
h = 25
Multiply them all together and you will have your answer!
(remember to square the radius!)

Answer 10

31428 I have taken pi to four decimal places=3.1428

3.1428x20x20x25=31428