If $ riangle ABC \sim riangle DEF$ such that $AB = 1.2$ cm and $DE = 1.4$ cm, the ratio of the areas of $ riangle ABC$ and $ riangle DEF$ is

Question

If $	riangle ABC \sim 	riangle DEF$ such that $AB = 1.2$ cm and $DE = 1.4$ cm, the ratio of the areas of $	riangle ABC$ and $	riangle DEF$ is

Accepted Answer

Step 1: $\frac{	ext{ar}(	riangle ABC)}{	ext{ar}(	riangle DEF)} = \left(\frac{AB}{DE}ight)^2 = \left(\frac{1.2}{1.4}ight)^2 = \left(\frac{6}{7}ight)^2 = \frac{36}{49}$

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