They are 10 units apart. DO this by finding the distance between two points. The equation is c=
![√(x)](https://img.qammunity.org/2019/formulas/mathematics/college/kbjsziyl4peosfq0f23ijai585vpxo148c.png)
(y2-y1)^2+(x2-x1)^2. This leaves you with
![√(x)](https://img.qammunity.org/2019/formulas/mathematics/college/kbjsziyl4peosfq0f23ijai585vpxo148c.png)
100, which equals ten. This answer can also be justified by the Pythagorean Theorem. Tell me if you'd like more details. : )