If one side of a triangle is (2a-b) cm long, the second side is (a + b) cm longer than the first side, and the third side is 2 times less than the first side by B cm (1) What's the circumference of this triangle in centimeters? (2) If the triangle is isosceles triangle and the second and third sides are equal, the perimeter of the triangle when B = 2 is obtained

If one side of a triangle is (2a-b) cm long, the second side is (a + b) cm longer than the first side, and the third side is 2 times less than the first side by B cm (1) What's the circumference of this triangle in centimeters? (2) If the triangle is isosceles triangle and the second and third sides are equal, the perimeter of the triangle when B = 2 is obtained

(1)（2a-b）+（a+b）=3a,2(2a-b）-b=4a-3b
C △ = 2a-b + 3A + 4a-3b = (9a-4b) cm
(2)3a=4a-3b,a=3b,b=2,a=6
C△=2*3a+（2a-b)=36+10=46

If the length of the first side of a triangle is (2a-b) cm, the second side is (a + 2b) cm longer than the first side, and the third side is 2 times less than the first side

Third side? Second side?
The third side length 2 (2a-b) - B = 4a-2b-b = 4a-3b
The second side length (2a-b) + (a + 2b) = 3a-b

If the first side of a triangle is (2a-b) cm, the second side is (a + b) cm longer than the first side, and the third side is two times less than the first side by B cm, then the perimeter of the triangle is (2a-b)______ Cm

The first side of the triangle is (2a-b) cm, the second side is (a + b) cm longer than the first side, and the third side is two times less than the first side by B cm, so the perimeter is: (2a-b) + (2a-b) + (a + b) + 2 (2a-b) - B = 2a-b + 2a-b + A + B + 4a-2b-b = 9a-4b (CM). So the answer is (9a-4b)