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家庭作业中,我布置了这样一题:小明用长0.9米、宽0.7米的长方形纸剪两条直角边分别是0.2米、0.3米的直角三角形小旗,他最多能剪多少面?
Homework, I arranged such a question: Xiao Ming with 0.9 meters long, 0.7 meters wide rectangular paper cut two rectangular edges are 0.2 meters, 0.3 meters at right angles to the triangular flag, how much he can cut the most surface?