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The diagram shows a running track ABCDEFA. AB and ED are the straight sides. The ends AFE and BCD are semi-circular shapes.
|AB| = |ED| = 90m and |AE| = |BD| = 70m.

Find
a)the total length of the two semi-circular ends, AFE and BCD;

b)the perimeter of the running track ABCDEFA;

c)the total area of the running track ABCDEF. (Take π = 22/7)