Answer:
21 feet of railing is needed
Explanation:
The diagram which was not included by I know it because I have it for homework this weekend shows the area of the deck:
Since we know the area of the deck is 223 square feet:
= 223
Find 8^{2}[/tex] :
8^{2}[/tex] = 64
[tex]x^{2} = 13
Find the longest edge:
x + 8 = 13 + 8
=> 21