142. 1) KP, PM, MN, NK, AD, BD, BC, AC, AK, DP, CN, BM
2) KPMN, ADBC, ACNK, BDPM, ADPK, BCNM
3) AD, KP, MN
4) KPMN, BCNM, BDPM
5) KPMN, ADPK
6) ADBC
143. 1) 4*63 + 4*25 + 4*32 = 252 + 100 + 128 = 480
2) Sпов. = 2*(ab + ac + bc) = 2*(25*32 + 25*63 + 32*63) = 8782
144. 1) 12*14 = 168
2) S = 6a² = 6*196 = 1176