arthematic progression

Asked by  | 24th Dec, 2009, 09:11: AM

Expert Answer:

The sum of such AP must be 360O

Hence,

S = n(a1+an)/2

360 = n(8 + 72)/2

n = 9

a9 = a1 + 8d

72 = 8 + 8d

d = 8

The angle in fourth sector = 8 + 3x8 = 32o

Regards,

Team,

TopperLearning.

Answered by  | 24th Dec, 2009, 01:50: PM

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