I can not see the picture?
In mathematics, a unit circle is a circle of unit radius—that is, a radius of 1. Frequently, especially in trigonometry, the unit circle is the circle of radius 1 centered at the origin (0, 0) in the Cartesian coordinate system in the Euclidean plane.
Given:
Last year Lira earned $12,000 less than her husband Todd.
Together they earned $75,000.
To find:
The amount earned by Lira in last year.
Solution:
Let x be the amount earned by Lira's husband inn last year.
Last year Lira earned $12,000 less than her husband Todd.
Amount earned by Lira = 
Total amount earned by Lira and her husband = 
= 
Together they earned $75,000.





Now,
Amount earned by Lira = 
= 
= 
Therefore, the amount earned by Lira in last year is $31500.
23 i used an app use should also give that a try
What you do is you do 93 x 81.
93
x 81
------------
93
+ 7440
-------------
7,533
That's the square footage. Hope it helps!