ajutor pls urgent (b)
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Răspuns:
a) dreptunghiul 1 = 4×2=8(latimea)
5×2=10(lungimea)
dreptunghiul 2 = 3×2=6(latimea)
4×2=8(lungimea)
b) • (4×2+5×2) : 2 = (8+10) :2 = 16:2 = 8
•(3×2+4×2) : 2 = (6+8) :2 =14 : 2 = 7