1.It is 100 square miles in area.面积100平方哩。 2.The square root of 16 is 4.16的平方根是4. 3.the new library covers 140,000 square metres of floor space.占地140000平方米。 4.Europe covers about 10 million square kilometres.欧洲方圆1000万平方公里。 5.The square of the standard devia...