Use "rotundity" in a sentence

1. A thousand years in the past, great men of the world sneered with caustic derision, the rotundity of the earth, and its globular form, moving with majestic precision and faithfulness around that faraway sun

2. He was arrayed in a long garment of costly black cloth, a sort of frock coat, and by the rotundity of his figure he seemed to be one of those accustomed to sit in the chief places at feasts

3. waiting, and as soon as he had placed his plump rotundity inside, they took the horses out and amid frantic cheers harnessed themselves to it instead and dragged it through the mud and the pouring rain all the way to `The Cave' - most of them were accustomed to acting as beasts of burden - where he again addressed a few words to them from the porch