Answer:
9.4 inches
Step-by-step explanation:
The distance between the opposite corners is the diagonal.
We can find this using the Pythagorean theorem. The diagonal is the hypotenuse.
a^2 +b^2 = c^2
8^2 +5*2 = c^2
64+25 = c^2
89=c^2
Take the square root of each side
sqrt(89) = sqrt(c^2)
sqrt(89) = c
9.433981132=c
Rounding to the nearest tenth
9.4 inches = c
