Respuesta :

Answer:

15

Step-by-step explanation:

use pythagorean theorem and fill in the blanks and solve for a^2

starandjaiden

Answer:

A=15

Step-by-step explanation:

This is a 3, 4, 5 triangle, so the perimeter of the triangle is a+4x+5x. You know that the x's go from 4x--20 and 5x--25. X=5, and 5x3=15

Good luck! :)

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