Answer: 5.09 units
Step-by-step explanation:
Given
Coordinates of Old oak tree are (3,7)
Coordinates of granite boulder are (-2,6)
Distance between them is given by distance formula i.e.
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
Distance between them is
[tex]\Rightarrow d=\sqrt{(-2-3)^2+(6-7)^2}\\\Rightarrow d=\sqrt{(-5)^2+(-1)^2}\\\Rightarrow d=\sqrt{25+1}=\sqrt{26}\approx 5.09\ \text{units}[/tex]