A sidewalk bounds a circular playground. Parents can exercise by walking around the sidewalk while watching their children play. If the inner edge of the sidewalk is 1,256.64 meters around, what is the radius of this playground in meters? *

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

Find the combined area of the triangles. click on the answer until the correct answer is showing. possible answers: a = 4 pi - 8a = 9 pi - 9/2 √3a = 16/3 pia = 16a = 27 pi