Mute
Com.Ciência.Gaia
A gente começa olhando para o retângulo da base. Ele tem área de 20 m² e altura de 2 m. Isso significa que sua base mede 10 m, já que 20 ÷ 2 = 10. Essa mesma medida, 10 m, é a base do triângulo que está em cima. O triângulo é retângulo e um de seus catetos mede 6 m. Como a hipotenusa vale 10 m, podemos reconhecer a proporção clássica do triângulo pitagórico 3–4–5, ampliada para 6–8–10. Logo, o outro cateto mede 8 m. Agora fica fácil calcular a área. Se os catetos 6 m e 8 m formassem um retâng
Follow
25
0
11
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