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The sides of a triangle are in the ratio 3:4:5. What is the length of each side if the perimeter of the triangle is 30 cm
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The sides of a triangle are in the ratio 3:4:5. What is the length of each side if the perimeter of the triangle is 30 cm

User Albana
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2 Answers

4 votes

Answer: 7.5 cm, 10 cm, 12.5 cm

Explanation:

User Sedat Kilinc
by
6.4k points
3 votes
One way:

3x + 4x + 5 x = 30
12 x = 30
Divide by 12
x = 2.5

3x = 7.5 (2.5x3)
4x = 10 (2.5x4)
5x = 12.5 (2.5x5)

7.5cm + 10cm +12.5cm = 30cm There are your three sides.
User Nishanth
by
6.0k points
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