1cm3 srebra waży 10,5 g.Ile ważyłby prostopadlościan o wymiarach 1dm;1dm;2dm zrobiony ze srebra ?
Daje 10 pkt. i naj
Prostopadłościan:
a = 1 dm = 10 cm
b = 1dm = 10 cm
h = 2 dm = 20 cm
V = a*b*h
V = 10*10*20 = 2000 cm³
1cm³ = 10,5 g
2000cm³ * 10,5g/cm³ = 21 000g = 21 kg
1kg = 1000g
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Prostopadłościan:
a = 1 dm = 10 cm
b = 1dm = 10 cm
h = 2 dm = 20 cm
V = a*b*h
V = 10*10*20 = 2000 cm³
1cm³ = 10,5 g
2000cm³ * 10,5g/cm³ = 21 000g = 21 kg
1kg = 1000g