Answer:
1.7cm
Explanation:
To solve, we have to use Pythagorean theorem.
a^2 + b^2 = c^2
our a is 1.5
our b is 0.8.
1.5^2 + 0.8^2 = c^2
2.25 + 0.64 = 2.89, which is our c^2
now we have to find the square root, which is 1.7. this means side AC is 1.7cm.