# If R is the radius of the earth and g the acceleration due to gravity on the earth’s surface, the mean density of the earth is

Q: If R is the radius of the earth and g the acceleration due to gravity on the earth’s surface, the mean density of the earth is

(a) 4πG/3gR

(b) 3πR/4gG

(c) 3g/4πRG

(d) πRG/12G