The first terms of an arithmetic sequence are 2 5 8 11 14

Write down an expression, in terms of n, for the nth term of this sequence
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In the diagram, be and ad pass throughthe center of circle o, and the area ofsector aoc is 47.45 square units. what isthe area of sector boc? use the value =3.14, and round your answer to two decimalplaces.22.33 square units25.12 square units