if a round object has a circumference of 20 inches, what is the diameter?
formula?
2006-10-27 09:09:14 · 10 answers · asked by Informer 5 in Science & Mathematics ➔ Mathematics
20/3.141=6.367
20 inches divided by pi equals 6.367
2006-10-27 09:12:04 · answer #1 · answered by Anonymous · 0⤊ 0⤋
diameter= circumference divided by Pi
diameter= 20 inches divided by 3.14
diameter= 6.36942675159235
2006-10-27 16:25:23 · answer #2 · answered by :)Tasha:) 1 · 0⤊ 0⤋
Circumference=(pi)*r^2
Diameter=2r
so 20=(pi)*(D/2)^2 or
[(20/pi)^1/2]*2=D
2006-10-27 16:21:17 · answer #3 · answered by xorosho 3 · 0⤊ 0⤋
the formula is 2 by pi by the radius
2006-10-27 16:12:51 · answer #4 · answered by AntiStyptic 2 · 0⤊ 0⤋
circumference = pi * diameter
therefore:
diameter = circumference / pi
if pi = 3.142 (approximately)
then:
diameter = 20 / 3.142
= 6.365 inches
2006-10-27 16:13:52 · answer #5 · answered by Anonymous · 0⤊ 0⤋
C=2(pi)r, where r is the radius. This is equivalent to C=(pi)d, where d is the diameter.
So if C=20, 20=(pi)d, so d=20/(pi).
2006-10-27 16:12:53 · answer #6 · answered by zex20913 5 · 0⤊ 0⤋
C=(pi)d
20=(3.14)d
d=6.37
2006-10-27 16:18:42 · answer #7 · answered by Anonymous · 0⤊ 0⤋
diameter circumference/pi
So d = 20/pi = 6.36 in. (approx.)
2006-10-27 16:12:25 · answer #8 · answered by steiner1745 7 · 0⤊ 0⤋
hey.
yeh i guess its easy
use the formula:
c=(pi)d and u no c=20 inches so put in the eq. andddd
d=20inches divided bi pi(which is 3.14.....)
wow i feel well cleva lol.
hope tht helps
2006-10-27 16:12:39 · answer #9 · answered by Anonymous · 0⤊ 0⤋
cicumference=2*pie*radius
2*radius=diameter
therefore
circumference=pie*diameter
diameter=convert 20inches into centimetre or metre and divide by 3.14
2006-10-27 16:19:04 · answer #10 · answered by karun 2 · 0⤊ 0⤋