1) 25х4х6 (20+5)*4)*6 (80+20)*6 100*6 600 2) 125х25х35 (120+5)*(20+5)*(30+5) (2400+600+100+25)*(30+5) (3000+125)*(30+5) 90000+15000+3750+625 109375 3) 75х36 (70+5)*(30+6) (70*30+70*6)+(5*30+5*6) 2100+420+150+30 2100+150+450 2100+600 2700 4) 96х50 (90+6)*50 90*50+6*50 4500+300 4800