1. According to the problem, the base of the triangle is 8cm long, and the height of the triangle is needed to find the area of the triangle.

2. The topic shows that the triangle is placed in a container with a water depth of 6cm, just immersed in water, and the height is 6cm.

3. The triangle area formula is the base multiplied by the height divided by 2, so its area is 24cm.