Calculate 67794

Calculate the volume of the cuboid in the given unit if you know the lengths of its edges.
A) a = 20 cm, b = 3 cm, c = 7 cm, (length)
B) a = 10 mm, b = 8 mm, c = 9 mm, (ml)
C) a = 30 cm, b = 5 cm, c = 8 cm, (l)
D) a = 300 mm, b = 4 m, c = 7 dm, (hl)

Correct answer:

A =  4.2 dl
B =  0.72 ml
C =  1.2 l
D =  8.4 hl

Step-by-step explanation:

a=20 cm b=3 cm c=7 cm  V1=a b c=20 3 7=420 cm3 A=V1 dl=V1:100  dl=420:100  dl=4.2 dl=4.2 dl
a2=10 mm cm=10:10  cm=1 cm b2=8 mm cm=8:10  cm=0.8 cm c2=9 mm cm=9:10  cm=0.9 cm  V2=a2 b2 c2=1 0.8 0.9=2518=0.72 cm3 B=V2 ml=V2 1  ml=0.72 1  ml=0.72 ml=0.72 ml
a3=30 cm b3=5 cm c3=8 cm  V3=a3 b3 c3=30 5 8=1200 cm3 C=V3 l=V3:1000  l=1200:1000  l=1.2 l=1.2 l
a4=300 mm m=300:1000  m=0.3 m b4=4 m c4=7 dm m=7:10  m=0.7 m  V4=a4 b4 c4=0.3 4 0.7=2521=0.84 m3  D=V4 hl=V4 10  hl=0.84 10  hl=8.4 hl=8.4 hl

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