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DeltaABC is similar to DeltaDEF. If area...

`DeltaABC` is similar to `DeltaDEF`. If area of `DeltaABC` is 9 sq.cm. and area of `DeltaDEF` is 16 sq.cm. and BC = 2.1 cm. Then the length of EF will be

A

5.6 cm

B

2.8 cm

C

3.7 cm

D

1.4 cm

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The correct Answer is:
B
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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?

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