Will give brainliest.

is only a line? i think so

c

step-by-step explanation:

i think because what else can be a sample of every member

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.

46

step-by-step explanation:

given

height = 168 cm

formula

height =2.47*f+54.13

solution

168 = 2.47f + 54.13             subtract 54.13 from both sides

168 - 54.13   = 2.47f             combine

113.87 = 2.47f                     divide by 2.47

113.87 / 2.47 = f                   combine

46.1 = f  

answer: 46 cm