The radius of the Earth is approximately 3,960 miles. Find the approximate surface-area-to-volume ratio of the Earth.
A.
0.00025
B.
0.00076
C.
1,320
D.
11,880
2 answers
4πR²3/(4πR³) = 3/R = 3/3960=0.00076
If a sphere’s volume is doubled, what is the corresponding change in its radius?