1
objętość walca
V=Pp*h=πr^2*h=π*(1/2*20)^2*40
V=4000π cm3
proporcja
8,4g - 1cm3
x - 4000π cm3
x=8,4*4000π/1
x=33600π g = 33,6π kg
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1
objętość walca
V=Pp*h=πr^2*h=π*(1/2*20)^2*40
V=4000π cm3
proporcja
8,4g - 1cm3
x - 4000π cm3
x=8,4*4000π/1
x=33600π g = 33,6π kg