Answer:
12.56
Step-by-step explanation:
Formula is Pi* radius(squared) and since you aren't given the radius you can figure that out by dividing the diameter by 2 to get radius
Time = 6hours
Distance = 38.4 Km
Speed = distance /time
= 38.4/6
= 6.4 km/h
<span>A system of linear equation comprises two or more linear equations.</span>
825 ÷ 7 = <span>117.857142857
hope i helped!!!!!</span>
