Tolong di bantu jawab ya terimakasih

<p>Ok mari kita bahas ....</p><p>a. &nbsp; x² = y² + z²</p><p>&nbsp; &nbsp; &nbsp; &nbsp;x = √(y² + z²)</p><p>&nbsp; &nbsp; &nbsp; &nbsp;y² = x² - z²</p><p>&nbsp; &nbsp; &nbsp; &nbsp;y = √(x² - z²)</p><p>&nbsp; &nbsp; &nbsp; &nbsp;z² = x² - y²</p><p>&nbsp; &nbsp; &nbsp; &nbsp;z = √(x² - y²)</p><p>&nbsp;</p><p>2. AB = 4 cm dan AC = 3 cm</p><p>&nbsp; &nbsp; &nbsp;BC² = AB² + AC²</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 4² + 3²</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 16 + 9</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 25</p><p>&nbsp; &nbsp; &nbsp; BC = √25</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 5 cm</p><p>&nbsp; &nbsp; &nbsp; Jadi, panjang BC adalah 5 cm</p><p>&nbsp;</p><p>3. PQ = 16 cm dan QR = 12 cm</p><p>&nbsp; &nbsp; &nbsp;PR² = PQ² + QR²</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 16² + 12²</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 256 + 144</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 400</p><p>&nbsp; &nbsp; &nbsp; &nbsp; PR = √400</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 20</p><p>&nbsp; &nbsp; &nbsp; &nbsp; Jadi, panjang PR adalah 20 cm</p>