Verified Answer :

apologiabiology

see attachment
altitute is 6
draw altitude
makes a right triangle

hyptonuse=side of triangle
3 and 6 are legs
a^2+b^2=c^2
3^2+6^2=c^2
9+36=c^2
45=c^2
sqrt both sides
3√5=c


the legnth of 1 side is 3√5 units (or aprox 6.708 units)

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