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a)
a=6dm
P=6²√3
P=36√3 dm²
b)
a=6√3 dm
P=(6√3)²
P=108dm²
c)
a=4√6 cm
P=(4√6 )²
P=96cm²
d)
a=x+2
P=(x+2)²√3
P=(x²+4x+4)√3 jed²