Tetrahedral prism

Calculate the area and volume of a tetrahedral prism that has a base rhomboid shape, and its dimensions are:
a = 12 cm, b = 70 mm, v_a = 6 cm, v_h = 1 dm.

Correct answer:

S =  5.24 dm2
V =  0.72 dm3

Step-by-step explanation:

a=12 cm dm=12:10  dm=1.2 dm b=70 mm dm=70:100  dm=0.7 dm v=6 cm dm=6:10  dm=0.6 dm  h=1 dm  S1=a v=1.2 0.6=2518=0.72 dm2 S2=2 (a+b) h=2 (1.2+0.7) 1=519=3.8 dm2 S=2 S1+S2=2 0.72+3.8=5.24 dm2
V=S1 h=0.72 1=0.72 dm3

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