Quadrilateral prism

The surface of the regular quadrilateral prism is 8800 cm2, the base edge is 20 cm long. Calculate the volume of the prism

Correct result:

V =  40000 cm3

Solution:

S=8800 cm2 a=20 cm  S1=a2=202=400 cm2  S=2⋅ S1+4⋅ a⋅ c  c=S−2⋅ S14⋅ a=8800−2⋅ 4004⋅ 20=100 cm  V=S1⋅ c=400⋅ 100=40000 cm3

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