Find the volume of the smaller wedge cut from a sphere of

Question

Use spherical coordinates. Evaluate intigrate intigrete intigrate E (x² + y²) dv, where E lies between the spheres x² + y² + z² = 1 and x² + y² + z² = 9. Use cylindrical or spherical coordinates, whichever seems more appropriate. Find the volume of the smaller wedge cut from a sphere of radius 6 by two planes that intersect along a diameter at an angle of π/ 6.