What is the length of side BC? Round your answer to the nearest tenth.

Answer:
D = 2.0 units
Step-by-step explanation:
We'll find the length using Distance Formula:
Distance Formula = [tex]\sqrt{(x2-x1)^2+(y2-y1)^2}[/tex]
D = [tex]\sqrt{(1-3)^2+(1-1)^2}[/tex]
D = [tex]\sqrt{(-2)^2+(0)^2}[/tex]
D = [tex]\sqrt{4}[/tex]
D = 2.0 units (to nearest tenth)