A. surface of a sphere is correct
Answer:
hope it helps u ........
density tomes volume
620x75 ... 3100x15
3.75m/s²
Explanation:
g= GM/r²
For planet 1
= GM/r² (i)
= 15m/s²
for planet 2
radius= 2*r= 2r
g= GM/r
= GM/(2r)²
= GM/4r²
= GM/r² *1/4
from (i)
= *1/4
= 15/4
= 3.75m/s²