He is  2√19 miles far way from starting point.
Suppose Billy starts at point A, turns at point B, and ends at point D, as shown below. 
If Billy turns 60◦ northward and walks six miles, then we can draw a 30 − 60 − 90 triangle whose hypotenuse is 6 miles 
It follows that Billy traveled 6/2 = 3 miles eastward during these 6 miles, and that he traveled 3√3 miles northward during these 6 miles. In total, Billy traveled 4 + 3 = 7 miles  eastward and 3√ 3 miles northward.
 By the Pythagorean Theorem, the distance from his starting point is q:
(7)2 + (3√3)2 
=√49 + 27 
= √76 
= 2√19 .
Learn more about  Pythagorean Theorem on:
brainly.com/question/20545047
#SPJ4
 
        
             
        
        
        
Answer:
15 feet
Step-by-step explanation:
Perimeter = All outside lengths added together
We know that the shape is a square, and squares have 4 sides.
So, divide 60 by 4.
60 / 4 = 15.
The length of one side is 15 feet.
 
        
                    
             
        
        
        
Answer:
7500 feet is the lowest sea level or half of the earth
Step-by-step explanation:
mark as brainliest
 
        
             
        
        
        
Answer:
1 and 3
Step-by-step explanation:
because 5 and 3 have the same value and since 5 and 1 add up to 90 degrees, 3 and 1 must also add up to 90 degree