Question

Help me plz i dont know to do this

Answer 1

Answer:

Length of diagonal==

$\sqrt{ {2}^{2} + {3}^{2} + {6}^{2} }$

$= \sqrt{4 + 9 + 36}$

$\sqrt{49 } = 7$

Answer 2

You gotta multiply and then round it to the nearest tenth hope it worked!