In the mathematics class, Teacher Ma asked the students to study in groups. The students in the first group surrounded a triangle with a 1-meter-long wire. One side of the triangle is (1/4) meter, and the other side is (3/8) meter. How long is the third side in meters? What kind of triangle is it?
数学课堂上，马老师让同学们小组合作学习．第一小组的同学用一根1米长的铁丝围了一个三角形，量得三角形的一边是(1/4)米，另一边是(3/8)米，第三条边长多少米？它是一个什么三角形？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (1/4) - (3/8)</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>