Respuesta :

a^2 + 4^2 = 8^2 --> a = 4·√3

Answer:

F) 4√3

Step-by-step explanation:

The altitude of the triangle creates a right triangle.  The right triangle has a leg of 4 and a hypotenuse of 8.  Using the Pythagorean theorem,

a²+4² = 8²

a²+16 = 64

Subtract 16 from each side:

a²+16-16 = 64-16

a² = 48

Take the square root of each side:

√(a²) = √(48)

a = √(16*3)

a = 4√3

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