Answer:
Im not rally sure but maybe 5.71 , here is my explanation :
Step-by-step explanation:
Tan 55 =x/4
tan 55 = 1/42814
1/42814 = x /4
×=5.712592027 .
1/7 = 0.14285714
rounded to the nearest thousandth, it would be 0.143
Find the average.
6+4=10
10/2=5
It takes 5 hours
