Figure 5 In Figure 5, OA = a and OB = b The point C divides OB in the ratio 1:3 The point D is the midpoint of AC (a) Find, as a simplified expression in terms of a and b (i) AC (ii) OD (iii) BD The point E is such that OE =¿OA Given that E, D and B are collinear (b) find the value of A area AOAC Given that area AOEB (c) find the value of u Page 13 I 20 +

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