Determine the area of the shaded region, given that the radius of the circle is 3 units and the inscribed polygon is a regular polygon. Give two forms for the an expression involving radicals or the trigonometric functions; a calculator approximation rounded to three decimal places. (Polygon has 9 nine sides).

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities