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# serious help needed watch

1. hi so basically this question is killing me, ik u should use pythagoras' theorem but like whaaat? help plz thanks.
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2. (Original post by User23)
hi so basically this question is killing me.
Death by geometry!

Mark on what distances you know.

From what you have you should be able to plot the centre of the circle.

Then see what you can construct.
3. (Original post by User23)
hi so basically this question is killing me, ik u should use pythagoras' theorem but like whaaat? help plz thanks.
Hint: perpendicular bisectors of a chord
4. and my hint Pythagoras again as in yesterdays's queston
5. (Original post by ghostwalker)
Death by geometry!

Mark on what distances you know.

From what you have you should be able to plot the centre of the circle.

Then see what you can construct.
right so i did that and i see that it makes a right angle triangle with the diameter. but i dont know length AB :/
6. (Original post by atsruser)
Hint: perpendicular bisectors of a chord
is it 21.189??
7. (Original post by TeeEm)
and my hint Pythagoras again as in yesterdays's queston
would it be 21.189??
8. (Original post by User23)
would it be 21.189??
i got 25
9. (Original post by TeeEm)
i got 25
HOW??
10. (Original post by teeem)
i got 25
omg i got 25 too i see what u did. U halved 14 and did 7^2 + 44^2 and sqrt the answer. But how did u just assume that if u halve 14 it goes straight to the centre?
11. (Original post by User23)
right so i did that and i see that it makes a right angle triangle with the diameter. but i dont know length AB :/
Do post some working - it's impossible to tell what's you've done from that.
12. (Original post by ghostwalker)
Do post some working - it's impossible to tell what's you've done from that.
i got 25 now.
13. (Original post by ghostwalker)
Do post some working - it's impossible to tell what's you've done from that.
therefore AB must be 9.748? pls tell me im right, it will make the rest of my day
14. Haha , its you again. Is TSR your personal calculator ^^
15. (Original post by TSR Mustafa)
Haha , its you again. Is TSR your personal calculator ^^
LOOL MUSTAFA yes, a bunch of genii in TSR. And plus I have no-one to help me.
16. (Original post by User23)
LOOL MUSTAFA yes, a bunch of genii in TSR. And plus I have no-one to help me.
I'd help you , but my maths is piss . Do you have any friends who could help?
17. (Original post by User23)
therefore AB must be 9.748? pls tell me im right, it will make the rest of my day
I got 8.

As I said, post some working - not just a final result; can't tell where you're going wrong.
18. (Original post by TSR Mustafa)
I'd help you , but my maths is piss . Do you have any friends who could help?
Naa, my friends' strong points aren't maths unfortunately. And are u in year 12?
19. (Original post by User23)
Naa, my friends' strong points aren't maths unfortunately. And are u in year 12?
Yep , how do u know lol
20. (Original post by ghostwalker)
I got 8.

As I said, post some working - not just a final result; can't tell where you're going wrong.
Here you are:
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