2007-09-19 01:49:25 · 12 answers · asked by willow 6 in Science & Mathematics ➔ Mathematics
Thankyou very much people. Rose E that means nothing to me
2007-09-19 02:00:35 · update #1
I have a log which i want to turn on to a ball on a lathe but log was to big so had to chisel it down to a max of 12" diameter, but needed circumference to measure it in the middle, if you catch me drift.
2007-09-19 04:29:43 · update #2
The circumference of a circle is given by the formula:
C = 2 x pi x r
Where:
C is the circumference
r is the radius
pi is a constant ~ 3.142
Of course since the diameter (d) is twice the radius the formula is also:
C = pi x d
So you have:
C = pi x 12
C = 37.6991 (using a calculator)
Answer: Circumference of a circle whose diameter is 12 inches = 37.7 inches (to 3 significant figures). PS Don't forget to give the units in this sort of question.
2007-09-19 03:50:19 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Circumference = pi multiplied by diameter
so 12 * pi (approx 3.142)
So the circumference is 37.7 inches.
2007-09-19 08:53:48 · answer #2 · answered by louisewoods1984 4 · 0⤊ 0⤋
37.68 inches Diameter
diameter X Pi= Circumference
= 12 x 3.14 = Diameter
12 X 3.14 = 37.68 inches
2007-09-19 10:55:26 · answer #3 · answered by john450630 2 · 0⤊ 0⤋
Ans. circumfarence= pi*d. Given D= 12"
pi= 3.14
Ans. 3.14*12= 37.68"..
2007-09-19 10:35:27 · answer #4 · answered by Sasi Kumar 4 · 0⤊ 0⤋
Circumference = 2âr, where â = 3.14 and r = radius.
so
2 x 3.14 x 6 = 37.68"
2007-09-19 09:39:14 · answer #5 · answered by Chariotmender 7 · 0⤊ 0⤋
The circumference is 37.704" (12 x 3.142)
2007-09-19 08:56:40 · answer #6 · answered by Tango 7 · 0⤊ 0⤋
pi 6 r
2007-09-19 08:59:17 · answer #7 · answered by shake it 2 · 0⤊ 0⤋
C = Ï d
C = Ï (12)
C = 37.7 in (to 1 dec. place)
2007-09-19 12:16:02 · answer #8 · answered by Como 7 · 1⤊ 0⤋
c= pi*d
c=3.142*12
=37.7
2007-09-19 10:13:17 · answer #9 · answered by ruthy 2 · 0⤊ 0⤋
12(pi)
2007-09-19 09:02:38 · answer #10 · answered by Lyrad 2 · 0⤊ 0⤋