3.14*20*2 3.14*20*5
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/15 06:55:58
提取公因式20²:原式=20²(1-3.14/2)=20²(1-1.57)=400*(-0.57)=-228
≈10.280
3.14*51^2-3.14*49^2=3.14*(51^2-49^2)=3.14*(51+49)(51-49)=3.14*100*2=628
化简后就是20/0.5=40
1.57
14.13
20加20加3.14乘2乘x等于77.6840+6.28x=77.68;6.28x=37.68;x=6;手机提问的朋友在客户端右上角评价点【满意】即可.
=3.14×400=1256
15*2*3.14*20/60=31.415*2*3.14*40/60=62.8
1×3.14=3.142×3.14=6.283×3.14=9.424×3.14=12.565×3.14=15.76×3.14=18.847×3.14=21.988×3.14=25.129×3.14=2
(3.14X30)2+188.4X15+3.14X5X2X20=8873.64+2826+628=12291.64
23.14*75+2314*0.25=23.14*75+23.14*25=23.14*(75+25)=23.14*100=2314
80/360*2*3.14*20=3.14x80x40/360=3.14x80/9=27.91
3.14×(25.12÷3.14÷2)²=3.14×(8÷2)²=3.14×4²=3.14×16=50.24
282631478.50.03140.12561570.1346153.860.28262.543494.212.56
3.146.289.4212.56再答:15.718.8428.5231.4再问:1到20全部的再答:哦,这是1-10再问:要到20再答:
3.14成400等于1256
2x+3.14x=(2+3.14)x=5.14x