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a)4 cm x 4 cm x 7 cm
b)11 cm x 9 cm x 3 cm
c) 3 m x 1 dm x 2 m . [ tutaj zamienic ]
P=ab+ac+cb
a) P= 16cm² + 28cm² + 28cm² = 72cm²
b) P= 99cm² + 33cm² + 27cm² = 159cm²
c) P= 0,3m² + 6m² + 0,2m² = 6,5m²