3 security guards below whistle at interval of 50 minutes, 60 minutes and 100 minutes if they blow together at 1:00am, at what time will they blow together again​

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the given curves about y = 8.8y = x3, y = 0, x = 4use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the given curves about y = 8.8y = x3, y = 0, x = 4