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1. The compound trapezoidal formula is a method used to solve equations with multiple roots.
复合梯形法是一种用于解决具有多个根的方程的方法。
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2. In this problem, we will use the compound trapezoidal formula to find the area of thetriangle.
在这个问题中，我们将使用复合梯形公式来求三角形的面积。
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3. The compound trapezoidal formula can be used to calculate the volume of a solid by knowing its dimensions and the height of the base.
复合梯形公式可以用来计算一个固体的体积，只需知道其尺寸和底面的高度。