题25 左边为 the number of inches in the perimeter of a square region with side of s inches.
右边为 the number of square inches in the area of square region with side of s inches.(s是什么意思····)
题43 左边为 the area of a triangular region with perimeter of 50
右边为 the area of a rectangular region with perimeter of 50.
题25 A: the number of inches in the perimeter of a square region with side of s inches.3 S! N: Q. E7 H! \: [. ^
B: the number of square inches in the area of square region with side of s inches.(s是什么意思····)
A:边长为s英寸的正方形的周长数; 即A=4s B:边长为s英寸的正方形的面积数;即B=S^2
那么,很显然是比较4s和s^2的大小(s>0),A,B大小无法比较,有可能相等(s=4),也可能不等
题43 A: the area of a triangular region with perimeter of 50
B: the area of a rectangular region with perimeter of 50.