题目

This month, Germany’s transport minister, Alexander Dobrindt, proposed the first set of rules for autonomous vehicles(自主驾驶车辆). They would define the driver’s role in such cars and govern how such cars perform in crashes where lives might be lost. The proposal attempts to deal with what some call the “death valley” of autonomous vehicles: the grey area between semi-autonomous and fully driverless cars that could delay the driverless future. Dobrindt wants three things: that a car always chooses property(财产) damage over personal injury; that it never distinguishe13．如图，房间里地面是长方形形状，是由九个不同的正方形地砖拼接铺成，其中最小的地砖边长是1，求这个房间的地面面积．