40 , write sentences about yourself. use the past continuous. what were you 1. at 3 o'clock yesterday afternoon 2. at 10 o'clock this morning? 3. three hours ago? 4. last saturday? 5. at 8 o'clock last night? 6. last summer? 7. at half past seven yesterday morning? 8. this time last week?
медный шар массой 3 кг должен занимать объём
v = m / р = 3 / 8930 = 0,33 л
объём полости = 2 - 0,33 = 1,67 л