Hello!
The equation for a circle is

r is the radius
To find the radius we take the square root of the number in the radius spot
sqrt169 = 13
The answer is 13
Hope this helps!
Parenthesis are something you can use in math problems that mean anything inside of them is what you have to solve first. In PEMDAS P is parenthesis which means that is first.
Answer:
On 3 gallons, he could travel 75 miles
Step-by-step explanation:
50 / 2 = 25 miles per gallon
25 * 3 = 75miles
I think it’s C totally didn’t copy anybody