The slope of the line would be - 6/5 x by just taking a look at the equation
Area=pi*r^2
16/25 therefore is r^2
therefore r=4/5
circumference = 2*pi*r
8*pi/5 is the circumference, C.
It would be A. 10x8=80nft2
C = conference room capacity
we can write something along the lines of C < 100, namely C can hold is less than 100.