Step 1:
The distance between two points $(x_1, y_1)$ and $(x_2, y_2)$ in a plane is given by the formula:
\[d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}\]
Substitute the given points $P(-6,-10)$ and $Q(6,5)$ into the formula:
\[d = \sqrt{(6 - (-6))^2 + (5 - (-10))^2}\]
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