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Question
A triangle ABC is enlarged, about the point O as centre of enlargement, and the scale factor is 3. Find : OA, if OA' = 6 cm.
Solution
Given that ABC is enlarged and the scale factor m = 3 to the triangle A'B'C'.
OA' = 6 cm
So, OA(3) = OA'
`=>` OA(3) = 6
`=>` OA = 2 cm
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