tolong dong

<p>dik : sisi miring = 8cm</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;sudut=45°</p><p>dit : panjang AB + BC=..?</p><p>jawab:</p><p>AB=AC×√2 /2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; BC/AB=√2/1</p><p>&nbsp; &nbsp; &nbsp;= 8 ×√2 /2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;BC= AB×√2 /1</p><p>AB =4√2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; BC= 4√2 × √2 /1</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;BC= 4√2</p><p>panjang AB+BC= AB+BC</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 4√2+4√2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 8√2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 8/√2 cm &nbsp; &nbsp; &nbsp; &nbsp; A.</p>