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# C1 question watch

1. Q15 only, ignore Q2
Can someone make any sense out of this?
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2. You want to calculate the distance between Q and P using the pythagorean/distance formula and then half it, because the radius is half the diamater.
3. This isn't the only way to do it I don't think, but can you find the midpoint of those two points?
4. (Original post by NiamhM1801)
This isn't the only way to do it I don't think, but can you find the midpoint of those two points?
(1,1) , I got that but don't know what to do next.
5. (Original post by Zacken)
You want to calculate the distance between Q and P using the pythagorean/distance formula and then half it, because the radius is half the diamater.
?
6. (Original post by ckfeister)
?
You need to go back and learn how to calculate the distance between two points.
7. Spoiler:
Show

8. (Original post by Zacken)
You need to go back and learn how to calculate the distance between two points.
I just did and got c = 10, radius is = 5, its the correct formula.
9. (Original post by ckfeister)
(1,1) , I got that but don't know what to do next.
Then find the distance from (1,1) to either one of the other 2 points - P would be easier.

You want to find the difference in x values and square it, then the difference in y values and square that. Add these together. Take the square root, and you should get your answer
10. (Original post by NiamhM1801)
Then find the distance from (1,1) to either one of the other 2 points - P would be easier.

You want to find the difference in x values and square it, then the difference in y values and square that. Add these together. Take the square root, and you should get your answer
thx

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