Find the perimeter of the shaded region. Round your answer to the nearest hundredth. A region enclosed by four arcs of equal lengths and equal meaures and four segments of length 2 which are placed alternately. The measures of the four arcs are 90 degrees. The height and length of the figure are 6.

Which is a logical conclusion based on the given information? a. figure abcd is a rhombus by the definition of a rhombus. b. segment ac is congruent to segment dc by cpctc. c. angle acb is congruent to angle adc by the angle-side-angle theorem. d. triangle acd is congruent to triangle cab by the hypotenuse-leg theorem.