If △ ABC is similar to △ def, the similarity ratio is 3:2, if their perimeter difference is 40 cm, then the perimeter of △ DEF is?

If △ ABC is similar to △ def, the similarity ratio is 3:2, if their perimeter difference is 40 cm, then the perimeter of △ DEF is?

40/(3-2)*2 =80

If the similarity ratio of angle ABC to angle DEF is 3:4, what is the perimeter ratio of angle ABC to angle def

If the three corresponding sides of two triangles are proportional, then the two triangles are similar, so 3:4

Given that a, B and C are the three sides of △ ABC, and a + B + C = 60cm, a: B: C = 3:4:5, the area of △ ABC is obtained

∵ a + B + C = 60cm, a: B: C = 3:4:5, ∵ a = 15cm, B = 20cm, C = 25cm. ∵ 152 + 202 = 252, ∵ ABC is a right triangle. The area of ∵ ABC is 12 × 15 × 20 = 150