## gabbyalicorn one year ago The lid for a circular plastic food container has a diameter of 9 cm. What is the approximate area of the top of the lid? Use 3.14 to approximate pi and round your answer to the nearest hundredth. 2 x pi x 9?

1. Michele_Laino

the requested area is given by the subsequent formula: $A = \pi \times \frac{{{9^2}}}{4} = 3.14 \times \frac{{81}}{4} = ...c{m^2}$

2. gabbyalicorn

62.775 = 1,017.36

3. Michele_Laino

no, it is: $= \pi \times \frac{{{9^2}}}{4} = 3.14 \times \frac{{81}}{4} = 63.585\;c{m^2}$

4. gabbyalicorn

63.585= 63.585 yeppers

5. Michele_Laino

now you have to round off to the nearest hundredth, what do you get?

6. gabbyalicorn

64.

7. gabbyalicorn

am i right?

8. Michele_Laino

I think not, for example if I have to round off this number to the nearest hundredth 1.156 then I get: 1.16

9. Michele_Laino

so, what do you get?

10. gabbyalicorn

oh 63.60

11. Michele_Laino

better is 63.59

12. gabbyalicorn

:D

13. Michele_Laino

:)

14. gabbyalicorn

Thankies!

15. Michele_Laino

:)