A circle has a radius r. What is the resulting circumference and area if the radius is increased by t? A. 2r(r + t); 7(r² + t?) B. 27(r + t); 27t(r² + t®) If the sum of the interior angles of a polygon is 2520 degrees, find the number of sides. А. 16 C. 27(r + t); 7i(r² + 2rt + t?) D. T(r + t); 27(r² + rt + t?) В. 12 С. 10 D. 20

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