The diameter of the base of a cylinder is 1 meter and the height is 2 meters. What is its surface area in square meters?
圆柱体的底面直径是1米，高是2米，它的表面积是多少平方米．
<gadget id="calculator">3.14 * 2 * 1</gadget>
<output>6.28</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) ** 2</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3.14 * (1/4) * 2</gadget>
<output>1.57</output>

<gadget id="calculator">6.28 + 1.57</gadget>
<output>7.85</output>

<result>7.85</result>