Aria is helping William to build a cylindrical sand castle at the beach. If the height of the castle is 10 cm and the radius is 3 cm, what would be the volume of the sand castle?

The volume of a cylindrical sand castle is given by the formula: V = πr^2h, where r is the radius and h is the height.

Substituting the given values, we get: V = π(3 cm)^2(10 cm)

Calculating: V ≈ π(9 cm^2)(10 cm) ≈ 282.74 cm^3.

Therefore, the volume of the sand castle is approximately 282.74 cubic centimeters.