## anonymous one year ago help!

1. anonymous

@Astrophysics

2. anonymous

3. Astrophysics

We just need to divide the area of the circle by the area of a square, so what is the area of a square and circle?

4. anonymous

4?

5. Astrophysics

No..I mean what's the formula

6. anonymous

how do i find the formula?

7. Astrophysics

Area of a square is side * side right? So we can say $A_{\square} = a^2$ and area of a circle is $A_{circle} = \pi r^2$

8. anonymous

im confused, i dont know what the formula is

9. anonymous

@Mehek14

10. Astrophysics

Geny, I provided you the formulas, you learn this in elementary. You just remember them for now, now since the radius is half the size of the side of a square we will let 2r be the side of the square, so we have a = 2r putting it all together we have $A_{\square} = (2r)^2~~~~A_{circle}=\pi r ^2$

11. anonymous

ok then what

12. Astrophysics

So we have $\frac{ \pi r ^2 }{ (2r)^2 }$

13. anonymous

ok

14. Astrophysics

So plug in the values and evaluate.

15. anonymous

can you help me with that though please

16. anonymous

i think its A

17. anonymous

the area of square is 64, right? @Astrophysics

18. Astrophysics

Yes.

19. anonymous

ok so then 4 x 2/8 x 2?

20. anonymous

@Astrophysics

21. myininaya

@geny55 have you found the area that is in the square but not in the circle?

22. myininaya

hint: to find that area you will need to find the difference between the square's area and the circle's area

23. myininaya

notice the square's side length is given by (4+4) and the circle's radius is given by 4 it should be pretty easy to find the areas of both the square and circle now and you want to know the difference of these areas over the squares area