GRE考试

解析:The figure above shows a large s

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【单选题】

The figure above shows a large square formed by fitting three L-shaped tiles and one small square tile together. If are ctangular floor 10 feet by 12 feet is to be tiled in large squares of this design,how many L-shaped tiles will be needed
A、810
B、405
C、270
D、135 E、45

网考网参考答案:A
网考网解析:

左面图形展示了由3个L形的瓦与1个小正方形的瓦所形成的大正方形。若给1个12英尺长,10英尺宽的长方形地板贴上这种图样的大正方形,问需要多少块L形的瓦 1 foot=12 inches。长方形地板的长和宽换算成英寸为144inches长120 inches宽,所以其面积为=120×144=17280 17280÷(8×8)=270 因为一个正方形由3个L形构成,所以贴该地板需L形的瓦的数目为:270×3=810 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>

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