## Liv1234 one year ago NEED HELP WITH A QUESTION PLEASE.

1. Liv1234

I think the answer is B.

2. rvc

$$\Large\rm Area~of~circle=\pi~ r^2~~\\~~\\ \Large where~r~is~the~radius~of~the~circle$$

3. rvc

here in this question r =?

4. Liv1234

3.14*4.1^2

5. rvc

4.1 is the length or diameter or radius?

6. Liv1234

7. rvc

so $$\pi$$ (4.1)^2

8. Liv1234

52.7834

9. rvc

what is the square of 4.1 ?

10. rvc

here we need not multiply the value of pi since the answer is in pi

11. Liv1234

So, 16.81?

12. Liv1234

That's the square of 4.1

13. rvc

correct :) All The best

14. Liv1234

Can you help me with another question?

15. rvc

Sure

16. Liv1234

17. rvc

i have seen this question in one of the test :)

18. Liv1234

I know, I need help with it aha.

19. Liv1234

Like, can you go over it with me?

20. rvc

21. butterflydreamer

well they've given us a scale where 1cm = 10 ft. So if we plant the trees 4.7 cm = ? ft You basically want to change from 4.7cm INTO feet using the fact that 1cm = 10ft. Sooo since, 1cm = 10 ft 4.7cm = 10 * 4.7 ft = ? ft

22. Liv1234

47! But would it be ft or cm?

23. butterflydreamer

correct :) Read what i wrote carefully... we are converting cm ----> ft Therefore 4.7 cm -----> 47 ft right? :)

24. Liv1234

That makes sense(: Can you help me with a couple of other questions?

25. rvc

good job @butterflydreamer thanks :)

26. Liv1234

27. butterflydreamer

i'm trying to write a speech right now so xD Sorrryy! Good luck :) I'm sure rvc can help you with some more?

28. Liv1234

@rvc can you help me with that question i just put up?(:

29. rvc

yes cross multiply

30. Liv1234

I do know how to cross multiply, but this one confuses me.

31. Liv1234

Also, I need help with one more question after this one.

32. rvc

example $\frac{ x }{ 15 }=\frac{ 5 }{ 2 }-->x=\frac{ 5 }{ 2 } X 15$

33. Liv1234

So, 5/7*56?

34. Liv1234

Which would be 40?(:

35. Liv1234

So, would it be 40?

36. Liv1234

@rvc Can you help me with another question please??(::

37. rvc

okay

38. Liv1234

39. Liv1234

This is the last one I need help with(:

40. rvc

the polygons are similar so the sides will be in proportion

41. Liv1234

So, how do we figure it out?

42. Liv1234

Wait wait wait!! So, 18*1.5=27. And 6*1.5=9. So would the answer be 9?

43. rvc

$\rm \frac{ AD }{ JM }= constant~ ratio$

44. rvc

you are right

45. rvc

All The Best :)

46. Liv1234

Thank you(:

47. rvc

:)

48. Liv1234

I gave @butterflydreamer a medal, but I wanted to give you one, but it won't let me, so I'll fan you(:

49. rvc

lol its fine dear

50. Liv1234

I have 53 questions on my final, I've already answered like 6 of them so I'm proud of myself. :p

51. Liv1234

Can I get your opinion on something?

52. rvc

yep

53. Liv1234

I'm going to get my hair done today and I was wondering which one you like best out of these two hairstyles that I wanna get.

54. Liv1234

55. Liv1234

56. rvc

ah all suits you dear