Question

guys plz help me with my question

plz give full method with explanation

i will mark you brainliast

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Answer 1

Answer:

Perimeter of triangle=(3x+1)+(4x+2)+(5x)

=12x+3

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Answer 2

Answer:

Anwer is 9

Step-by-step explanation:

3x+1+4x+2+5x

=12x+3

12x=3

x=3÷12

x=0.5

3x+1 =3×0.5+1=2.5

4x+2=4×0.5+2=4

5x=5×0.5=2.5

Perimeter of a triangle=2.5+4+2.5

=9 sq unit