Question

I need help, can someone help me? What is the arc length of the arc subtended in a circle with radius 6 and an
angle of 7pi/4? ?

Answer 1

http://www.coolmath.com/reference/circles-trigonometry

Answer 2

Thank you for the link but, I am still unable to understand.

Answer 3

s = rΘ
(arc length = radius * angle)

Answer 4

https://www.khanacademy.org/math/trigonometry/unit-circle-trig-func/radians_tutorial/v/arc-length-as-fraction-of-circumference

Answer 5

(if my calculations are correct) I got 16.49 (not rounded) but the answers are
A) 7pi/4
B) 36pi
C) 126pi/4
D) 14pi/8
E) 21pi/4

Answer 6

they want an exact answer, not from the calculator. Multiply by hand

Answer 7

Oh, I see. Thank you, dude.