## brianAC. Group Title What is the area of LMNO? (picture below) one year ago one year ago

1. brianAC. Group Title

|dw:1359688362043:dw|

2. geerky42 Group Title

Find the height $$\overline{NP}$$ then use the formula $$A = bh$$

3. brianAC. Group Title

isnt the height 10?

4. geerky42 Group Title

No, it's slant height. We want actual height.

5. brianAC. Group Title

damn i forgot how to find height i got all into other formulas

6. geerky42 Group Title

Use Pythagorean Theorem. Ring any bells?

7. brianAC. Group Title

ohhh ok. give me a minute

8. brianAC. Group Title

so it would look like 19^2+10^2=8^2?

9. geerky42 Group Title

No, here, let me show you. |dw:1359689637105:dw| Does this make sense?

10. geerky42 Group Title

|dw:1359689823749:dw|

11. geerky42 Group Title

Does this make sense?

12. brianAC. Group Title

yea

13. geerky42 Group Title

So, what is h?

14. brianAC. Group Title

36

15. geerky42 Group Title

You forgot to take square root of it. (√)

16. brianAC. Group Title

what u mean?

17. brianAC. Group Title

i think the height is 18 but im not sure

18. AccessDenied Group Title

$$h^2 + 8^2 = 10^2$$ <--We solve this for $$h$$. $$h^2 = 10^2 - 8^2$$ <-- Notice that we have that exponent of 2. We have to take the square root of both sides. $$h = \sqrt{10^2 - 8^2}$$ <-- This would be our value of h.

19. geerky42 Group Title

Can you find the value of h yet?