Answer:
A. False
B.False
C.True
Explanation:
A. Diameter formula - 2r your R equals 4.7so, 4.7 times 2 is 9.4 inches which is not close to 25 inches
B and C. Volume of a sphere formula-4/3πr^3 making the total 434.892765432 which 434.9 in^3 is a better approximatation than 277.6 in^3.