john-walsh_60c08d7655797
john-walsh_60c08d7655797
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PREMESSA; h(cilindro)=x h(cono)=y h(solido)=(x+2y)=45 y=1/3(x) 45=(x+2/3x) m.c.m.=3 (45*3)=(3x+2x) 135=5x x=(135:5)=27 y=1/3(x)=1/3(27)=9 CILINDRO: r=18 h=27 A(b)=(r^2*pg)=(18^2*pg)=324pg 2A(b)=(2*324pg)=648pg S(l)=(2*r*h*pg)= =(2*18…