If ΔABC and ΔDEF are similar triangle and AB = 1.2 cm and DE = 1.4 cm. Find the ratio of areas of ΔABC and ΔDEF. यदि ΔABC और ΔDEF समरूप त्रिभुज है और AB = 1.2 सेमी. DE = 1.4 सेमी. है तो ΔABC और ΔDEF के क्षेत्रफलों का अनुपात ज्ञात कीजिये।

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