Answer: 12 cm
Step-by-step explanation:
The masses of the spheres are proportional to their volums, and the cube of the ratio is k^3=135/5=27 ==> k=3
The greater radius is 3*4=12 (cm)
16 I think is a rational number
The zeros are -2, 1, and 2
If you graph it you can find out the rest
