anonymous one year ago Ms. Thomas is making a badge for her son in the shape of a square. The sides of the badge measure 3 inches each. Ms. Thomas wants to put a stripe across the badge from one vertex to the other vertex. What is the approximate length of the stripe? A. 3.5 inches B. 4.2 inches C. 4.9 inches D. 6.0 inches http://static.k12.com/calms_media/media/1422500_1423000/1422755/1/162780a56917075b14305a853794f7f7e67bb0db/MS_PA_131002_171204.jpg

1. Ehsan18

the formula for diagnol of a square is x(2)^1/2 Where x is the side

2. anonymous

?

3. Ehsan18

no!

4. Ehsan18

$\sqrt{2} \times x$

5. anonymous

multiply the length of the side by $$\sqrt 2$$

6. anonymous

so multiply 3 by 1.4?

7. Ehsan18

yup

8. anonymous

|dw:1434421555070:dw| $a^2+a^2=h^2\\ 2a^2=h^2\\ \sqrt 2\times a=h$

9. anonymous

3x1.4=4.2

10. anonymous

9+9=18

11. anonymous

wat

12. anonymous

OOOOOH IT'S 4.2