## anonymous one year ago Please help. I will MEDAL and FAN!!!!! Referring to the figure, on the right triangle shown, find the unknown side length. (If necessary, round to the neartest tenth.)

1. anonymous

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2. anonymous

@CallMeKiki @sugarplum15

3. anonymous

is that a right angled triangle ?

4. anonymous

No. It doesn't have the box in the corner

5. anonymous

its mentioned that its a right angled triangle

6. anonymous

use pythagoras

7. anonymous

have you been able to do ?

8. anonymous

So a^2 would be 8.

9. anonymous

And 20 would be c^2?

10. anonymous

$a ^{2} = b ^{2} + c ^{2}$ replace a by 20, b by x and c by 8 $(20)^{2} = (x)^{2} + (8)^{2}$

11. anonymous

@OM14forever better now ?

12. anonymous

how do I find x

13. anonymous

20/8=

14. anonymous

is that what I should do

15. anonymous

$x ^{2} = 20^{2} - 8^{2}$

16. anonymous

so 12

17. anonymous

$x ^{2}= 400 - 64$ $x ^{2} = 336$ $x = \sqrt{336} = 18.3$

18. anonymous

nearest to tenth will be x= 18

19. anonymous

ok thanks