One afternoon, a student who is 1.8 meters tall measured shadows to find the height of a tree. The student's shadow was 1.5 meters long. At the same time, the shadow of the tree was 9 meters long. How tall is the tree?​

The cross-sectional areas of a right triangular prism and a right cylinder are congruent. the right triangular prism has a height of 6 units, and the right cylinder has a height of 6 units. which conclusion can be made from the given information? the volume of the triangular prism is half the volume of the cylinder. the volume of the triangular prism is twice the volume of the cylinder. the volume of the triangular prism is equal to the volume of the cylinder. the volume of the triangular prism is not equal to the volume of the cylinder.