Question

7. Calculați volumul unui paralelipiped dreptunghic (în dm) cu dimensiunile de:
a) 3dm, 2 dm, 5 dm; b) 30 cm, 20 cm, 40 cm; c) 120 mm, 50 mm, 100 mm;
d) 2 dm, 40cm, 500 mm; e) 2 m, 30 dm, 800 cm ; ) 2 dam, 5 dam, 6 dam .

Answer 1

Explicație pas cu pas:

a) 3 dm, 2 dm, 5 dm

$V = 3 \times 2 \times 5 = 30 \: dm ^{3}$

b) 30 cm = 3 dm, 20 cm = 2 dm, 40 cm = 4 dm

$V = 3 \times 2 \times 4 = 24 \: dm^{3}$

c) 120 mm = 1,2 dm, 50 mm = 0,5 dm, 100 mm = 1 dm

$V = 1.2 \times 0.5 \times 1 = 0.6 \: dm^{3}$

d) 2 dm, 40cm = 4 dm, 500 mm = 5 dm

$V = 2 \times 4 \times 5 = 40 \: dm^{3}$

e) 2 m = 20 dm, 30 dm, 800 cm = 80 dm

$V = 20 \times 30 \times 80 = 48000 \: dm^{3}$

f) 2 dam = 200 dm, 5 dam = 500 dm, 6 dam = 600 dm

$V = 200 \times 500 \times 600 = 60000000 \: dm^{3}$