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triangle ABC is similar to triangle DEF....

`triangle ABC` is similar to `triangle DEF`. If area of `triangle ABC` is 9 sq. cm. and area of `triangle DEF` is 16 sq. cm. and BC=2.1 cm. Then the length of EF will be
`triangle ABC,`triangle DEF` के समरूप है। यदि `triangle ABC` का क्षेत्रफल 9 वर्ग से.मी. हो और `triangle DEF` का क्षेत्रफल 16 वर्ग से.मी. हो ओर BC = 2.1 से.मी. हो तो EF की लम्बाई बताइए?

A

5.6 cm

B

2.8 cm

C

3.7 cm

D

1.4 cm

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