Question 1062886
The perimeter of a 10 sided object is 50 units, so each side is 5 units.
This divides the polygon into 10 isosceles triangles, each of which has a radius for the two equal sides.
Half the length of a side is 2.5 units
The central angle is 36 degrees, and it is 18 degrees for the triangle whose sides are the radius, half the side length and the apothem.  
sin 18=2.5/radius (the hypotenuse)
radius=2.5/sin 18=8.09 units. A
The area will be pi*(8.09)^2, and that will be greater than 3*64 (192), so it has to be 206 for B.
The actual answer is 205.61 rounding upward to 206.