



 
Hi Mark. Let's call the side length a. You can consider the floor of the tent to be equivalent to a rectangular floor when you shift things around, as shown on the right.. If we call the height of the triangle h, then Pythagoras' theorem can express h in terms of the hexagon's side length a: And since you know that the area is 90 sq ft., you can write an expression for the area in terms of a, solve for a and answer your question:
Cheers,  


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