If a piece of paper with a length of 15 cm and a width of 10 cm is used to form a cylinder (excluding the joints), what is the lateral area of the cylinder in square centimeters?
如果用一张长15厘米、宽10厘米的纸围成一个圆柱(不计接头处)，那么这个圆柱的侧面积是多少平方厘米．
<gadget id="calculator">15 * 10</gadget>
<output>150</output>

<result>150</result>