I've included all the steps and working out in the attached image.
The answer should be 12.2
7^2+10^2=c^2
49+100=c^2
149=c^2
12.2=c
Getting the central area of a polygon is not possible. Probably the question refers to the central angle. In a a regular polygon, getting the central angle is that you need to use the formula.
Central Angle of a polygon = 360 degrees / number of sides of a polygon.
Why 360 degrees? Because, a circle has a total of 360 degrees. And a circle is a polygon with no sides.
1= $13.50
2= $27
3=$40.50
I Don't Know How The Hour You Looking For?
Y=1
Y=1 because then it is saying that the line is touching the y axes at 1
