Originally Posted by

**ThebrightOne** hi I'm new to the forum and not sure where to post. I just have a few questions that i need help answering.

-Find the indicated length for each equilateral triangle with given lengths..

altitude 3 square root 3; side? and side 12; altitude ?

-A boy 6 feet tall casts a shadow 15 feet long. at the same time a tree casts a shadow of length 50 feet. what is the height, in feet, of the tree?

-The three sides of a triangle measure 4, 8 and 9. find the length of the longest side of a similar triangle whose perimeter is 63.

thank you in advance.