Use 36 cm long iron wire to form a right triangle. The ratio of the lengths of the three sides of this triangle is 3:4:5. What is the length of its hypotenuse in cm?
用36厘米长的铁丝围成一个直角三角形，这个三角形三条边长度的比是3：4：5，它的斜边长多少厘米．
<gadget id="calculator">3 + 4 + 5</gadget>
<output>12</output>

<gadget id="calculator">36 / 12</gadget>
<output>3</output>

<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<result>15</result>