## anonymous one year ago The seventh-grade class is building target areas for a PE activity. The bases for the game will be in a circular shape. The diameter of each circle is 3 feet. Approximately, how many square feet of the turf needs to be painted for a base circle? Use 3.14 for π and round your answer to the nearest tenth.

1. anonymous

7.1 square feet 9.4 square feet 18.8 square feet 28.3 square feet

2. anonymous

$A=\frac{ \pi d^2 }{ 4 }$ d = diameter = 3

3. anonymous

?

4. anonymous

5. anonymous

plug in 3 for d. What's 3² ?

6. anonymous

6?

7. anonymous

wait 9?

8. anonymous

yes, then mulitply by 3.14

9. anonymous

Yep, do you still need help?

10. anonymous

so 9 times 3.14?

11. anonymous

yes 9 * 3.14

12. anonymous

You guys got it. Maybe next time

13. anonymous

so 28.26?

14. anonymous

yeah, now divide by 4

15. anonymous

7.065?

16. anonymous