The area of the base of a cylinder is 78.5 square centimeters and the height is 15 centimeters. What is the area of the side of the cylinder in square centimeters?
一个圆柱的底面积是78.5平方厘米，高是15厘米，这个圆柱的侧面积是多少平方厘米．
<gadget id="calculator">2 * 3.14 * 5 * 15</gadget>
<output>471</output>

<result>471</result>