Square prism

Calculate the volume of a four-sided prism 2 dm high, and the base is a trapezoid with bases of 12 cm, 6 cm, the height of 4 cm, and 5 cm long arms.

Correct answer:

V =  0.72 dm3

Step-by-step explanation:

h=2 dm a=12 cm dm=12:10  dm=1.2 dm c=6 cm dm=6:10  dm=0.6 dm v=4 cm dm=4:10  dm=0.4 dm  S=(a+c) v/2=(1.2+0.6) 0.4/2=259=0.36 dm2  V=S h=0.36 2=0.72 dm3

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