There is an app that will help for these types of questions called, "Showmath."
the answer will be 0.092 as a decimal
Make the question more clear i cant understand it :/ include all the information from the actual question to get the best answer.
To find the midpoint, add x1 and x2 then divide by 2, then add y1 and y2 and divide by 2.
Midpoint = (2a +2b /2 , 0 + 2c /2)
Midpoint = a+b, c