Matematyka z + 3gim. zad 6/166. z góry dzięki :)

a) r-1,2cm H-120cm 1cm3-0,5g Pc = 2пr2 + 2пr * H Pc=2*3,14*1,44+1,2*3.14*120 Pc=9.04+904,32 Pc=913,36cm3 913,36*0,5=456,68g b) r-0,01cm h-3000cm Pc = 2пr2 + 2пr * H Pc=2*3.14*0.0001+2*3,14*3000 Pc=0,000628+188,4 Pc=188,400628 188,4*8,96=1688,064g