## anonymous one year ago Janine inflated 1 ball to a radius of 18 cm and another ball to a radius of 12 cm. How much more air was in the larger ball? Use 3.14 to approximate pi and express your answer in hundredths. cm^3

1. anonymous

@amistre64 @dmndlife24 @texaschic101 @Michele_Laino @JoannaBlackwelder @Thesmarterone @TheSmartOne

2. anonymous

volume of 18 cm ball - volume of 12 cm ball

3. anonymous

so pi18^2

4. anonymous

$V=\frac{4}{3}*\pi*r^3$

5. anonymous

1728x3.14x4/3

6. anonymous

5425.92 x 4/3

7. anonymous

can i turn 4/3 into a decimal?

8. anonymous

4/3 = 1 1/3 = 1.3333333333333333333333333 for infinity

9. anonymous

how u multiply it then?

10. anonymous

$\frac{5425.92*4}{3}$

11. anonymous

7234.56

12. anonymous

Right. Now we have to subtract this from the volume of the 18 cm ball.

13. anonymous

24416.64

14. anonymous

Right. So all we have left is to find the difference between them. In other words, 24416.64-7234.56=?

15. anonymous

17182.08

16. anonymous

17. anonymous

thanks

18. anonymous

No problem :)