If the perimeter of the rectangle above is36,then l=()
A. 9 B. 14 C. 16 D. 28 E. 32
单项选择题In the coordinate plane,points A and B are endpoints of a diameter of a circle with center(-2,1).If the coordinates of A are(-5,5),what are the coordinates of B()
A. (0,0) B. (3,-2) C. (3,-1) D. (2,-2) E. (1,-3)
单项选择题What fraction of a cubic meter is the volume of a cubic block Of stone with edge of length 10 centimeters()(1 meter=100centimeters)
A.A B.B C.C D.D E.E