Answer:
x ≈ 19.2 units
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 , then
x² + 19² = 27²
x² + 361 = 729 ( subtract 361 from both sides )
x² = 368 ( take square root of both sides )
x =
≈ 19.2 ( to the nearest tenth )