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ABCD dreptunghi AB=8cm ,BC=4cm .Pabcd= ,Aabcd=

Răspuns :

Pabcd = 2AB + 2BC = 2x8 + 2x4= 16 + 8 = 24
Aabcd = ABX BC = 8x4= 32
    
P = 2(AB + BC) = 2(8 + 4) = 2 × 12 = 24 cm

A = AB × BC = 8 × 4 = 32 cm²