Mathematics: PLEASE HELP WITH QUESTIONS IN THE SCREENSHOT (a,b,c) WILL MARK BRAINLIEST!

PLEASE HELP WITH QUESTIONS IN THE SCREENSHOT (a,b,c)

charlotte67

20.01.2021

21 feet of railing is needed

Step-by-step 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:

$x^{2} + 8^{2}$

Since we know the area of the deck is 223 square feet:

$x^{2} + 8^{2}$ = 223

Find 8^{2}[/tex] :

8^{2}[/tex] = 64

$x^{2} + 64 = 223223 - 64 = 169So,[tex]x^{2} = 169Find square root of 169:[tex]\sqrt{169} = 13$

[tex]x^{2} = 13

Find the longest edge:

x + 8 = 13 + 8

=> 21

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