Mathematics for IGCSE & O level - Ratio And Proportion (Section 2 - No. 50)
The ratio of the sides of a triangle is 4:5:6. If the perimeter is 60 cm, what is the length of the longest side?
15 cm
20 cm
24 cm
30 cm
Explanation
Ratio is 4+5+6 = 15. 60/15=4. Longest side is 6*4 = 24
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