? = central angle of a circle, r = radius of the circle, s = length of the intercepted arc, 
speed, 
speed, and t = time. Find the missing quantity. Give an exact answer unless otherwise indicated.r = 0.4 meter, ? = 78°, s = ?
Round your answer to three decimal places when necessary.
A. 0.294 m
B. 0.545 m
C. 31.2 m
D. 3.403 m
Answer: B
Mathematics
