The area of a triangle is equal to the area of a circle with a diameter of 20 decimeters. It is known that the base of the triangle is 3.14 meters. What is its height in meters?
一个三角形的面积与直径是20分米的圆面积相等，已知三角形的底是3.14米，它的高是多少米？
<gadget id="calculator">20 / 10</gadget>
<output>2</output>

<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">2 / 3.14</gadget>
<output>0.636943</output>

<gadget id="calculator">3.14 * 1 * 0.636943 * 1</gadget>
<output>2.000001</output>

<result>2.000001</result>