In the right triangle shown DF=EF=3. How long is DE?

Question

Nathalia Lynch

Mathematics

31 March, 16:12

In the right triangle shown DF=EF=3. How long is DE?

+2

Answers (2)

Know the Answer?

Gavin Valdez · Answer 1

4.24

Step-by-step explanation:

To solve this, use the Pythagorean therom. A^2 + b^2 = C^2

in this case a = 3 and b = 3

so 9 + 9 = sqrt 18

4.24

Olive Yang · Answer 2

Answer:3√ (2)

Step-by-step explanation:

DF=3

EF=3

DE=√ (3^2 + 3^2)

DE=√ (3x3 + 3x3)

DE=√ (9+9)

DE=√ (18)

DE=√ (2 x 9)

DE=√ (2) x √ (9)

DE=√ (2) x 3

DE=3√ (2)