## anonymous one year ago Please help ..... The circle has area 25. Which is greater? A. The length of chord AB B. 10

1. anonymous

|dw:1442592726071:dw|

2. anonymous

10 is greater

3. Nnesha

formula for circle area is $\huge\rm A=\pi r^2$ for this question chord is same as diameter

4. Nnesha

so you can substitute a for 25 to find r and radius is half of the diameter

5. anonymous

wait nvm 10 is not greater

6. anonymous

how do i find the chord?

7. anonymous

if the area is 25.... then how do i deconstruct that...

8. anonymous

|dw:1442593407064:dw|

9. Nnesha

chord: ends point of chord would be on the circle |dw:1442593461551:dw| if the passes through the center then its called the diameter

10. Nnesha

the line*

11. anonymous

AB is a chord not diameter tho

12. Nnesha

well looks like AB line passes through the center ......

13. anonymous

not drawn to scale

14. Nnesha

nvm then, by just looking at the diagram AB looks like diameter..

15. anonymous

so what do i do....

16. anonymous

nvm it's logic i got it

17. Nnesha

what did you get ?

18. anonymous

|dw:1442594618735:dw|

19. Nnesha

that's what i said if you solve for r u will get 2.82 and diameter is double of radius ...