Question 293147
This is a right triangle with sides equal to:
2*150=300 miles
2*200=400 miles
The distance between then is the hypotenuse of this triangle.
300^2+400^2=d^2
90,000+160,000=d^2
d^2=250,000
d=sqrt250,000
d=500 miles is the distance between the 2 planes @ 3:00 pm.