Answer:
25.12 kilometers
Step-by-step explanation:

C = 2 × 3.14 × 4
C = 25.12
Answer:
6 12 36
Step-by-step explanation:
im not sure -_- ....
Answer:
5.498 - C
Step-by-step explanation:
Length of an arc = tetha/360 × 2 × pi × r
Converting 7pi/4 to tetha
(7 × 180) / 4 = 315°, since pi = 180°
Plugging values to the formula:
315/360 × 2 × 3.142 × 1 = 5.498units
It has to be one of the negative answers. I’m not sure which one but I am sure it’s a negative number. :)