(1)m水=700g-200kg=500g
V瓶=V水=m水/ρ水=500g/1g/cm³=500cm³
(2)m金=1000g-200g=800g
(3)m水'=1409g-1000g=409g
V水'=m水'/ρ水=409/1g/cm³=409cm³
V金=V瓶-V水'=500cm³-409cm³=91cm³
ρ金=m金/V金=800g/91cm³=3.5g/cm³=8.8g/cm³
(1)m水=700g-200kg=500g
V瓶=V水=m水/ρ水=500g/1g/cm³=500cm³
(2)m金=1000g-200g=800g
(3)m水'=1409g-1000g=409g
V水'=m水'/ρ水=409/1g/cm³=409cm³
V金=V瓶-V水'=500cm³-409cm³=91cm³
ρ金=m金/V金=800g/91cm³=3.5g/cm³=8.8g/cm³