Answer:
5 gallons
Step-by-step explanation:
The container volume can be found from the formula for the volume of a cylinder:
V = πr^2h
V = π(6 in)^2(10 in) = 360π in^3 ≈ 1130.97 in^3
Then the number of gallons is ...
(1130.97 in^3)/(231 in^3/gal) = 4.896 gal
The approximate volume of sand is 5 gallons.