Answer:
113
Step-by-step explanation:
note: to find the circumference of a circle using the radius, you use this equation -- 2r. since the radius is 18, you make the equation 218. that gets you 36, which, if put into the calculator, is about 113.
1/V
2.12 miles
15
50% is the same as 1/2
1/2 of 30 is 15