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In Fig. 15.109, the area of segment A C ...

In Fig. 15.109, the area of segment `A C B` is (FIGURE) (a) `(pi/3-(sqrt(3))/2)\ r^2` (b) `(pi/3+(sqrt(3))/2)\ r^2` (c) `(pi/3-2/(sqrt(3)))\ r^2` (d) None of these

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In Fig. 15.111, if A B C is an equilateral triangle, then shaded area is equal to (FIGURE) (a) (pi/3-(sqrt(3))/4)r^2 (b) (pi/3-(sqrt(3))/2)r^2 (c) (pi/3+(sqrt(3))/4)r^2 (d) (pi/3+sqrt(3))r^2

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