BANK EPFO SSA Mock Test 2023 Quantitative Aptitude Geometry Triangles, Congruence and Similarity

दिया गया है ΔDEF ~ ΔABC, यदि ΔABC का क्षेत्रफल 9 cm2, ΔDEF का क्षेत्रफल 12 cm2 और BC = 2.1 cm है, तब EF की लंबाई कितनी है?

1
\(\frac{8\sqrt3}{5}cm\)
2
\(\frac{3\sqrt7}{5}cm\)
3
\(\frac{4\sqrt7}{5}cm\)
4
\(\frac{7\sqrt3}{5}cm\)
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