Respuesta :

irspow
The base BD is √(225-144)=9 so 

AD=14-9=5 so

AC=√(144+25)=13

So the perimeter is 13+14+15=42

The answer is C
Spymore
We can apply the Pythagorean theorem

DB² = 15² -12² = 225 - 144 = 81

[tex]DB= \sqrt{81} = 9[/tex]

So, AD = 14 - DB = 14 - 9 = 5

Then AC² = CD² + AD² = 12² + 5² = 144 + 25 = 169

[tex]AC= \sqrt{169} = 13[/tex]

So the perimeter = AB + BC + AC = 14 + 15 + 13 = 42

ANSWER is C) 42

[tex]\textbf{Spymore}[/tex]​

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