Answer:

Step-by-step explanation:
Given


Required
Determine the circumradius, R
The circumradius is calculated as follows;

Substitute the values of AB, BC and AC

Evaluate the denominator


Take square root of 230400

<em>(Approximated)</em>
<em>Hence, the circumradius is 9.63</em>
Answer:
It is -7x + 5
Step-by-step explanation:
I could do a whole explanation, but I'm sure you want the answer quickly. So there ya go. Hope this helps!