The surface area of a cylinder is 62.8cm**2, and its base radius is known to be high (2/3), what is the side area of the cylinder in cm**2?
一个圆柱的表面积是62.8cm**2，已知它的底面半径是高的(2/3)，则圆柱的侧面积是多少cm**2．
<gadget id="calculator">3.14 * 2 * 2 * 3</gadget>
<output>37.68</output>

<result>37.68</result>