## anonymous one year ago The figure below shows a shaded circular region inside a larger circle: What is the probability that a point chosen inside the larger circle is not in the shaded region? 24% 36% 50% 64%

1. anonymous

2. anonymous

@Study_together

3. anonymous

why didnt u medal me

4. anonymous

find the area of each

5. anonymous

subtract the larger area from the smaller

6. anonymous

@liana1026 why

7. anonymous

then take the ratio of the difference of the areas to the total area that is all

8. anonymous

actually i should have said "subtract the smaller from the larger" sorry

9. anonymous

why did @Study_together get medal i did two problems @liana1026

10. anonymous

11. Study_together

Remember area of a circle is $A=\pi r ^{2}$

12. anonymous

okay

13. anonymous

36%

14. mathstudent55

Since the area of a circle is related to the square of the radius, just square both radii. Then divide the smaller number by the larger number and multiply by 100. That gives you what percentage of the area of the large circle is the area of the small circle. Then subtract that percentage from 100%.

15. anonymous

thanks

16. Study_together

Give him/her the explanation NO DIRECT ANSWERS

17. anonymous

5*5*3.14=78.5 4*4*3.14=50.24 50.24/78.5=.64 1-.64=.36 so 36%

18. mathstudent55

4^2 = 16 5^5 = 25 16/25 * 100 = 64% 100% = 64% = 36%