Question

If a central angle of measure 30° is subtended by a circular arc of length 6 meters, as
is illustrated below, how many meters in length is the radius of the circle?
How do you do this?

Answer 1

the diagram ?

Answer 2

no i got it
circumference is calculated using the formula
\[( \theta \div 360 ) \times 2 \pi \times radius\]

Answer 3

s = (a) r

r = s/(a) right?

Answer 4

1 / 12 of 2 pi * r = 6
1/6 * pi *r = 6
pi * r = 36
r = 36 / pi
r = 11.45 ( approx - taking pi as 3.142 )

Answer 5

6
----- = 36/pi = .... yeah
pi/6