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Question
Triangles ABC and DEF are similar.
If AC = 19 cm and DF = 8 cm, find the ratio between the areas of two triangles.
Solution
In ΔABC and ΔDEF, AC = 19 cm, DF = 8 cm.
Since, `"area (ΔABC)"/"area (ΔDEF)" = "AC"^2/"DF"^2 = (19)^2/(8)^2 = (361)/(64)`
Hence, the required ratio is 361: 64.
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