Respuesta :

swetaroka16

Answer:

7cm , 11 cm , 12 cm

Step-by-step explanation:

perimeter = 30 cm

3x - 2 + 2x + 5 + 4x = 30

9x + 3 = 30

9x = 30-3

X = 27/9

X = 3

so 3x - 2 = 3 × 3 - 2 = 7 cm

2x + 5 = 11 cm

4x = 12 cm

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