Let AB=BC=CD=DE=AE then A1B1=B1C1=C1D1=D1E1 =E1A1
Then the area of the upper and lower bases of the prism: Sbase=4AB225+105=422525+105,
both bases: S∗=2S=222525+105
1.
A side face has the area S=AB⋅AA1 , all five side faces have the area S∗∗=5S=5⋅15⋅32=2400 cm2
2.
The total surface area: S=S∗+S∗∗=222525+105+2400≈3175,2148 cm2
3.
The volume of the prism: V=Sbase⋅AA1 =422525+105⋅32=180025+105 ≈12387,4373 cm3
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