ON USATESTPREP PLSS HELP AND QUICKLY

If the cube shown is 1 centimeter on all sides, what is the length of the diagonal, x, of the cube? (rounded to the nearest tenth) A) 1.5 cm B) 1.7 cm C) 1.9 cm D) 2.2 cm

1.5

Step-by-step explanation:

d2 = a1 + (a√1)1 = a^2 + 0.41a = 0.41a.=1.41

Root 2 = 1 . 41 upon root two equal to one upon 1.41 . 1/root 2 * root 2 * root 2 . 2 root upon 2= 1.41 / 2

the answer is 0.3175 hope that you ^w^

also you might actually want to put this picture up if you want people to solve it luckily i remember this question