-18.5004901 that’s the answer! Hope this helps!
Answer:
If there are 15 adults we can expect 6 children, for 25 adults we can expect 10 children, and for 40 adults we can expect 16 children.
the solution is attached below
the tangential acceleration of car A = -9.8m/s^2
car B = - 13.44 m/s^2
car C = -6.16m/s^2
Area of circle is πr²
12 = 3.14r²
3.82 = r²
1.95 = r