Answer:

Step-by-step explanation:
The formula of a volume of a sphere:

R - radius
We have R = 3 ?. Substitute

If the radius is 30, then the volume is:

If 30 is the length of diameter, then the radius R = 30 : 2 = 15.
Therefore the volume:

(12+8)\ 5 + 15=19... this solution works because 12+8=20.. 20/5=4 and then 4+15=19
Please give me brainlest
click this link.
https://artofproblemsolving.com/wiki/index.php/2019_AMC_8_Problems/Problem_24
or copy it then paste it in search.
F hope that helped have anger he try’s