C o r o 1 1. 2. 



3 5. S.i fagrit p— : i £> et j' — i <r , qno cafd 

 pnndum O in medium rediinguli uicidlt ,flet'« 



vnde hoc cafii pef totara bafin prcilio acqualiter 

 dlftribiictur. 



Problema. 



Si bafis , qua corpus plano incumbit {lierit Tab. m. 

 circiilus Tadio AB — ^? defcriptus , et dircdio pres- i^ig^ la» 

 fionis totius G, cadat in pundam O, vt fit APrp 

 fit P O — ^ , inuenlre preflionem in fmgulis pundis. 



S o 1 u t i o. 



3^. Diuifo ■vt fupra circulo in fuos quatuor 

 quadrantes , in primo confideretur pundum quod- 

 cunque V, pro quo ponatnr A X — A" et X V z= v^ 

 ibique erit preffio — a. -}- (^ x -\- y v, fimul vero 

 conQderentur in reiiquis quadrahtibus , punda ana- 

 loga v,{J,u, ac primo quidem preffiones in his 

 pundis ita fe habebunt : 



I. Preflio in V — a + ^ ji' + yu 



in V —a. — ^ X + Y V 



m V — a+ ^x — Y V 



{ ia u — a — ^ X — y V 



Summa n: 4 ct. - ' 



^ s $ ft n. 



