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área de um triângulo com lados 20 cm, 26 cm e 37 cm usando a fórmula de Heron. (Resp: ≈ 249,5 cm².)
área de um triângulo com lados 20 cm, 26 cm e 37 cm usando a fórmula de Heron. (Resp: ≈ 249,5 cm².)
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