1)a.147x20x5=14700
265x10x4=10600
b)324x20x7=45360
402x30x2=24120
c)536x20x8=85760
394x30x4=47280
d)482x40x2=96400
670x20x6=80400
3)a.12832
b.8372
c.50,125
d.15,8262869565
2)a.234x23=5382
143x22=3146
213x15=3195
b.324x13=4212
483x24=11592
304x18=5472
c.523x33=17259
643x42=27006
412x34=14008
d.701x91=63791
840x80=67200
420x30=12600