Asked by angelo
how to calculate arc of the circle
Answers
Answered by
Writeacher
Assistance needed.
Answered by
Reiny
in general
arclength = radius * theta, where theta is the sector angle measured in radians.
BUT, since this is labeled grade 8, I doubt if you have studied radian measure.
So, the other way would be to calculate the circumference of your circle first.
Then you would have to know the sector angle.
set up the proportion
arc/circumference = sector angle/360º
eg. if the radius is 10 cm and the angle is 40º
arc/20pi = 40/360
arc = 80pi/360 = ....
arclength = radius * theta, where theta is the sector angle measured in radians.
BUT, since this is labeled grade 8, I doubt if you have studied radian measure.
So, the other way would be to calculate the circumference of your circle first.
Then you would have to know the sector angle.
set up the proportion
arc/circumference = sector angle/360º
eg. if the radius is 10 cm and the angle is 40º
arc/20pi = 40/360
arc = 80pi/360 = ....
Answered by
Detria
when & when
There are no AI answers yet. The ability to request AI answers is coming soon!