Answer:
B. 9 in
Step-by-step explanation:
The area covered by the fabric ([tex]A[/tex]) is represented by the following formula:
[tex]A = l^{2}[/tex]
Where [tex]l[/tex] is the side length of the canvas, measured in inches, and which is now cleared:
[tex]l = \sqrt{A}[/tex]
If [tex]A = 77.8\,in^{2}[/tex], then:
[tex]l = \sqrt{77.8\,in^{2}}[/tex]
[tex]l \approx 8.82\,in[/tex]
Which corresponds to option B.
