Show complete formulas, solutions, and figures. Enclose all final answers in a box. Round off to 3 decimal places.
1. A spherical sector is cut from a sphere such that its central angle is 25 deg and its volume is 216 cu cm. Determine the radius of the sphere.
2. Find the weight of the snowball 1.2 m in diameter if the wet compact snow of which this ball is made weighs 480 kg/m3.