Question

Please answer in the form of a number

Answer 1

Answer:

d ≈ 8.3

Step-by-step explanation:

This is kind of like the pythagorean theorem, but with one extra value.  Thus, $d^2=l^2+w^2+h^2$.

Plug in the values to get:

$d^2=2^2+7^2+4^2\\d^2=4+49+16\\d^2=69\\d=\sqrt{69}$

Thus d ≈ 8.3