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Two sprinklers, $$R$$ and $$T$$, disperse water over separate circular regions. Sprinkler $$R$$ covers a circular region with a radius of 18 feet, while sprinkler $$T$$ covers a circular region with a radius of 4 feet. What is the ratio of the area of the region covered by sprinkler $$R$$ to the area of the region covered by sprinkler $$T$$?
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· 相关考点
4.5.2 圆的周长与面积
4.5.2 圆的周长与面积
以上解析由 考满分老师提供。
