Question

The length of an arc defined by a 60o
central angle in a circle of diameter 3 in. is ?

Answer 1

length of complete circle with radius r: L= 2Pi*r
60º is 60/360=1/6 of a circle, so L =2Pi*3*1/6=Pi

Answer 2

i dont understand ? @myko

Answer 3

the formula for length of the circle is L= 2Pi*r. The full circle has 360º. So if you take only 60º it would be 1/6 of the circle. So 1/6 of it's length

Answer 4

ohhh so the equations would b 2Pi*6?

Answer 5

no.\[ 2\Pi*r \over 6\]

Answer 6

whats the radius? isnt it just twice the diameter?

Answer 7

yes

Answer 8

oh, sry, i missed that in your question. Radius is 3/2 in this case

Answer 9

so L=2Pi*3/6*2=Pi/2

Answer 10

k thanks

Answer 11

yw