gabbyalicorn one year ago What is the approximate volume of a sphere with a radius of 9 in.? Use 3.14 to approximate pi and express your answer in hundredths.

1. gabbyalicorn

@kohai

2. triciaal

use the same formula I just gave you. this time substitute for pi and you already have r

3. gabbyalicorn

4/3 x 3.14 x 81

4. triciaal

|dw:1442269672766:dw|

5. anonymous

$\frac{4 \pi 9^3}{3}=972 \pi =3053.63 \text{ cubic inches}$

6. gabbyalicorn

so 4 x 3.14 x ÷ 3

7. anonymous

( 4*3.14*9*9*9 )/3 = (9156.24)/3

8. gabbyalicorn

i got 3052.08 is this correct? @robtobey

9. gabbyalicorn

yep it is. :) ty

10. gabbyalicorn

also if i was doing this on another problem could i use 4*3.14*9*9*9

11. gabbyalicorn

but how'd you get to the third power. i read the problem and I didn't see it say it has a 3.

12. anonymous
13. gabbyalicorn

oh, thank you this helps a lot

14. anonymous