Respuesta :

Intriguing456

Answer:

11.4

Step-by-step explanation:

Split the area into a rectangle and a right triangle, and since the base of the triangle is 14 - 7 = 7, use Pythagorean Theorem:

7^2 + 9^2 = x^2

Solve:

49 + 81 = x^2

130 = x^2

x ≈ 11.4

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