An isosceles triangle of lawn has a circumference of 132m and a base of 48cm. What is the waist length in centimeters?
一个等腰三角形的草坪，周长132m，底边长48cm，腰长多少厘米？
<gadget id="calculator">132 - 48</gadget>
<output>84</output>

<gadget id="calculator">84 / 2</gadget>
<output>42</output>

<result>42</result>