The standard form of a circle:

- the coordinates of a center of a circle
- the radius
We have:
the center: 
the radius: 
substitute

Answer:
sorry dont know just did this to get 5 pionts :)
Step-by-step explanation:
38 < x + 10
38 - 10 < x
x > 28
Plot and connect the points A(6,-7), B(1,-7), C(1,-4), D(3,-2), E(7,-2), F(7,-4), and find the length of DE
strojnjashka [21]
The length is 4 units...
They share the same value of y so the length would be | 7 - 3 | = 4