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p= a*a
p= 3/4 * 3/4 = 9/16 m2
a=1 3/5m
b=3 2/5m
p= 17/5 * 8/5 = 27 1/5m2
a=6 1/4
b=2 2/5
p= 25/4 *12/5= 15m2
p=3x4
p=12
prostokat o bokach 1 3/5 i 3 1/2
8/5 x 7/2= 28/5= 5 3/5
prostokat o bokach 6 1/4 i 2 2/5
25/4 x 12/2= 12