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If the ratio of the sides of a triangle is 3:4:5, what is the length of the longest side if the perimeter is 36 cm? (2021)

Practice Questions

1 question
Q1
If the ratio of the sides of a triangle is 3:4:5, what is the length of the longest side if the perimeter is 36 cm? (2021)
  1. 15 cm
  2. 12 cm
  3. 9 cm
  4. 18 cm

Questions & Step-by-step Solutions

1 item
Q
Q: If the ratio of the sides of a triangle is 3:4:5, what is the length of the longest side if the perimeter is 36 cm? (2021)
Solution: Let the sides be 3x, 4x, and 5x. Then, 3x + 4x + 5x = 36. Thus, 12x = 36, giving x = 3. The longest side is 5x = 15 cm.
Steps: 0

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