Mathematics for IGCSE & O level - Ratio And Proportion (Section 3 - No. 4)
The ratio of the sides of a triangle is 3:4:5. What is the perimeter of the triangle is the shortest side is 6cm?
15 cm
24 cm
27 cm
30 cm
설명
3:4:5. 6 is 3*2. so 3*2=6, 4*2=8, 5*2=10. then, 6+8+10 = 24cm