## Liv1234 one year ago @ganeshie8

1. Liv1234

2. Liv1234

3. Liv1234

4. ganeshie8

|dw:1434460238333:dw|

5. Liv1234

Would the other angle be 24?

6. Liv1234

I mean 56?

7. ganeshie8

how ?

8. Liv1234

45+11=56.

9. ganeshie8

thats a good try, but no. you can't add oranges and coconuts

10. ganeshie8

angles are like oragnes sides are like coconuts they are not same things, so you cant add/subtract ok

11. Liv1234

Okay. So how would I find out what the other angle is?

12. ganeshie8

use triangle sum property the angles in a triangle add up to 180 : x + 45 + 90 = 180

13. Liv1234

45?

14. ganeshie8

Yes, both angles are equal... that means we have a 45-45-90 triangle |dw:1434460608243:dw|

15. ganeshie8

Hypotenuse = $$\large 11\sqrt{2}$$

16. Liv1234

So, that's what the answer would be?

17. ganeshie8

Yes

18. Liv1234

Oh okay. What about the other two questions?(:

19. Liv1234

And for 32, I thought it was D, but I wasn't sure.

20. ganeshie8

|dw:1434460737573:dw|

21. Liv1234

30?

22. ganeshie8

30 is the radius of given circle, not circumference circumference is the length around circle (also called perimeter)

23. ganeshie8

look up ur notes if you don't remember the formula for circumference

24. Liv1234

Would it be 188.5?

25. ganeshie8

leave it in terms of $$\pi$$, do not simplify

26. ganeshie8

* do not convert into decimals

27. Liv1234

So, 189?

28. ganeshie8

nope, what formula are you using ?

29. Liv1234

I was using the formula to find the circumference and got 188.5

30. ganeshie8

what is it

31. Liv1234

2*pi*r

32. ganeshie8

Yes, circumference = 2*pi*r = 2*pi*30 = 60*pi

33. ganeshie8

|dw:1434461082495:dw|

34. Liv1234

60*pi=188.4

35. ganeshie8

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