长方形ABCD周长为16米，在他的每条边上个画一个以该边为长度的正方行，已知这4个正方形的面积和为68平方米，求长方形ABCD的面积？(d8H+`4^4m(s+R2x7F
(d8H+`4^4m(s+R2x7F
算式：提示3I3R7e4y(R-g'g+p(d8H+`4^4m(s+R2x7F
答：长方形ABCD的面积是/J1\2s4U平方厘米。(d8H+`4^4m(s+R2x7F
(d8H+`4^4m(s+R2x7F