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B)297
c)60000
b)11cm na 9cm na 3 cm
P=2*99+2*33+2*27=198+66+54=318 cm²
c)3m na 1 dm na 2m
1dm=0,1m
P=2*0,3+2*0,2+2*6=0,6+0,4+12=13 m²