There is a wooden stake at the two vertices on the diagonal of a square lawn with a side length of 12 meters, and a rope with a length of 12 meters is tied to the wooden stake, and a rabbit is tied to the other end of the rope. Try to calculate Take a look: How big is the area where two rabbits can eat grass on this lawn? (The length of the rabbit is ignored.) (Draw a sketch first, then calculate.)
一个边长为12米的正方形草坪的对角线上的两个顶点处分别有一根木桩，木桩上都系有一根长为12米的绳子，绳子的另一端都系有一只兔，试算一下：两只兔在这个草坪上都能吃到草的面积有多大？(兔子身长忽略不记．)(先画出草图，然后计算．)
<gadget id="calculator">12 ** 2</gadget>
<output>144</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3.14 * 144 * (1/4)</gadget>
<output>113.04</output>

<result>113.04</result>