jak obliczyć obwód trójkąta prostokątnego równoramiennego o polu 4.5 cm 2
2 * 4,5 =9cm²
a² = 9
a = 3
3+ 3+ = 6 +
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2 * 4,5 =9cm²
a² = 9
a = 3
3+ 3+
= 6 + 