If I have a triangle with the coodinates A(0,0) B (30,0) and C (30,40)
Is the centre of gravity 1/3 of the base and 1/3 of the height?
would this make it (10, 40/3) ??
The area of the triangle is
You now need a triangle such that
The ratio of the main triangle's height to the base is
You need to have or
The center of gravity will occur along the triangle with the x coordinate equal to 21.2132.
You will need to do the appropriate calculations for the y coordinate.
You want to cut the large triangle so that the upper or smaller triangle is half the area of the larger triangle.