Find the exact circumference of a circle, when the radi is 7 meters. What is the exact number for pi in decimal format?
2007-10-24 13:36:05 · 9 answers · asked by Swish 1 in Science & Mathematics ➔ Mathematics
[08]
The exact circumference of the circle is
=22/7 *2*7
=44 m
The exact value of pi has not yet been found because it is non-terminating decimal fraction and is equal to 22/7.However,for all practical purpose,we accept it as 3.14 for our day to day scientific calculations
2007-10-24 13:41:00 · answer #1 · answered by alpha 7 · 0⤊ 3⤋
The answer is A circumference=2*r*pi (r=6) circumference=12pi
2016-04-10 03:32:52 · answer #2 · answered by ? 4 · 0⤊ 0⤋
the exact circumference (2*pi*r) would be 14 pi. Pi is about 3.1415926535898 (the decimal does not terminate)
2007-10-24 13:39:24 · answer #3 · answered by M H 2 · 0⤊ 0⤋
pi is irrational so there is no way to express it... it goes without repeating a pattern.
I think they just mean to leave it in terms of pi.
C = pi * d
C = 2 pi r
So if your radius is 7, the circumference is:
2 pi (7) = 14 pi
That's the exact value rather than an approximation.
2007-10-24 13:39:25 · answer #4 · answered by Puzzling 7 · 1⤊ 0⤋
C = 2 π r
C = 2 x (22 / 7) x 7 m
C = 44 m
π = 22/7 is usually taken as 3.14
2007-10-24 20:05:03 · answer #5 · answered by Como 7 · 0⤊ 0⤋
There is no exact number for pi, so I would just leave pi as a part of the answer.
C = 2pi*r
So, C = 2 * pi*7.
C = 14pi
2007-10-24 13:39:02 · answer #6 · answered by scotsgirl 2 · 1⤊ 0⤋
3.14159
use the formula 2 pi R!
2007-10-24 13:39:07 · answer #7 · answered by beachsweetie33@sbcglobal.net 3 · 0⤊ 2⤋
Circumference = 2piR
pi = 3.14159265
2007-10-24 13:38:53 · answer #8 · answered by anovelidea24 3 · 0⤊ 2⤋
3.14
2007-10-24 13:38:35 · answer #9 · answered by the rocket 4 · 0⤊ 2⤋