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pochemuha
3 years ago
14

In the right triangle shown, DF=EF=3DF=EF=3D, F, equals, E, F, equals, 3.

Mathematics
1 answer:
jarptica [38.1K]3 years ago
7 0

Answer:

<h2>The side DE is 4.2 units long, approximately.</h2>

Step-by-step explanation:

In the given triangle, side DE is the hypothenuse. So, we can use Pythagorean's Theorem, where both legs are 3 units long.

DE^{2}=DF^{2}+EF^{2}\\ DE^{2}=3^{2}+3^{2}\\DE^{2}=9+9\\DE=\sqrt{18} \approx 4.2

Therefore, the side DE is 4.2 units long, approximately.

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