Answer:
x ≈ 15.62
Explanation:
using Pythagoras' identity in the right triangle.
the square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
x² = 12² + 10² = 144 + 100 = 244 ( take square root of both sides )
x =
≈ 15.62 ( to the nearest hundredth )