The students in class 31 are in the physical activity class. The teacher arranges the students into a square team. Regardless of counting from the front, back, left, or right, Xiaohua is the third. Then class 31 participates in the physical activity class. how many people.
三1班同学们在体育活动课上，老师把同学们排成一个正方形的队伍，无论从前、后、左、右来数，小华都是第3个，那么三1班参加体育活动课共有多少人．
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<result>25</result>