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A sailmaker made two flat sails, S and T, each in the shape of a trapezoid with a pair of parallel horizontal bases. The bottom bases of the sails have the same length x, where x is 3 times the length of the top base of sail S, and x is 2 times the length of the top base of sail T. The height of sail T is 1.5 times the height of sail S. Both sails were made of material that had a fixed cost per unit area. If the total cost of the material for sail S was $400, what was the total cost of the material for sail T?
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· 相关考点
4.4.4 梯形
4.4.4 梯形
以上解析由 考满分老师提供。
