Answer:
72 inches
Step-by-step explanation:
The total in ratio would be 3 + 4 + 5 = 12
The largest side is the ratio of "5". Now we can setup a proportionality and solve for other sides:
Let smallest side (3) be x and 2nd largest be (4) y. SO,
[tex]\frac{3}{5}=\frac{x}{30}\\5x=3*30\\5x=90\\x=\frac{90}{5}\\x=18[/tex]
18 is the smallest side.
Also
[tex]\frac{4}{5}=\frac{y}{30}\\5y=4*30\\5y=120\\y=24[/tex]
2nd largest side is 24
We know largest side is 30
Thus perimeter (sum of 3 sides) = 18 + 24 + 30 = 72 inches
