What is pi to the tenth digit after the decimal? : )

How many square feet of out door carpet will we need for this hole? 8ft 3ft 12ft 4ft

What is the value of x in the diagram below?

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?