Here's the question you clicked on:
de4354
A tree 5ft tall has a shadow that is 14ft long. Of another tree cast a shadow 21 feet long, at the same time of day, how tall is the tree?
This problem is related to proportions(direct variation). Step 1: Set a proportion like this-\[5:14=x:21 \]Step 2: I'm afraid that you'd have to do this step on your own. Solve.
@akhil009 I appreciate you answering with the intent of helping people, but unfortunately you are supposed to work with the asker and make him achieve the solution for it. http://openstudy.com/code-of-conduct
|dw:1344176922285:dw| here is trigo approch