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a) 2ab+2bc+2ca = Pole prostopadłościanu.
a=10
b=10
c=10
p= 2x10x10 + 2x10x10 + 2x10x10
p= 600 [cm2]
b)
a=2
b=3
c=8
p=2x2x3 + 2x3x8 + 2x8x2
p= 12 + 48 + 32
p = 92 [cm2]
c)
a=6
b=6
c=6
P= 2x6x6 + 2x6x6 + 2x6x6
p= 72 + 72 + 72
p= 216 [cm2]
d)
a=8
b=8
c=20
p= 2x8x8 + 2x8x20 + 2x8x20
p= 128 + 320 + 320
p= 768 [cm2]