Finding Unknown Length in 3D Figures

A student was finding the unknown length of the triangle but they made a mistake.

What step in their work is the mistake?

Complete the problem.

Graph the points $$\left(0,-6\right)$$ and $$\left(-4,2\right)$$ .

What is the EXACT length of the blue diagonal line?

What is the APPROXIMATE length of the blue diagonal line?

What line represents $$11m$$ according to the equation $$2^2+5^2+11^2=e^2$$ ?

What line represents $$11m$$ according to the equation $$2^2+5^2+d^2=11^2$$ ?

What is the EXACT length of the blue diagonal line?

What is the APPROXIMATE length of the blue diagonal line to the nearest tenth?

Order the following values from greatest to least.