The perimeter is \( 3x + 4x + 5x = 60 \).
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- Solving for \( m \) gives \( m = 300 \).
- A triangle has sides in the ratio 3:4:5. If the perimeter of the triangle is 60 cm, what is the length of the longest side?
- Let the sides be \( 3x \), \( 4x \), and \( 5x \).
- Simplifying gives \( 12x = 60 \).
- Solving for \( x \) gives \( x = 5 \).
- The longest side is \( 5x = 25 \) cm.
