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

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter8: Areas Of Polygons And Circles
Section8.2: Perimeter And Area Of Polygons
Problem 31E: Mary Frances has a rectangular garden plot that encloses an area of 48 yd2. If 28 yd of fencing are...
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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
Transcribed Image Text: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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