有两块面积相等的平行四边形实验田,一块底边长70米,高45米,另一块底边长90米,高是多少米?;r5I+y:s7P*_-x'T
算式：提示*M-s*U7_'c'G+f/r5b;r5I+y:s7P*_-x'T
答：高是1U-C*k9u-`1m(]0r']米。;r5I+y:s7P*_-x'T