3 years ago

What is the perimeter of triangle DEF?

Mathematics

1 answer:

Mrac [35]3 years ago

4 0

Answer:

(4.2 units)

Step-by-step explanation:

By inspection of the illustration we can see that leg DE has length 3 and that leg DF also has length 3. By the Pythagorean Theorem, 3^2 + 3^2 = 2(3^2); thus, the length of the hypotenuse EF is 3√2, or approximately 4.24 units. The third answer choice (4.2 units) is the correct one.

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Answer:

D. 3,461

Step-by-step explanation:

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3,461 < 3,520

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