270 * 1000 = 27000
270 * 100000 = 27000000
<span><span>р₁=π*D₁</span>
<span>D₁=3,5/π=3,5/3,14=1,115дм </span>
<span>D₂=1,115*5/7=0,796дм </span>
<span>р₂</span></span><span><span>=0,796*3,14=2,499дм
</span></span>
1000-(561-0)/561+0*9635=1000-1=999
(3581-3581)/1247+(177-17)-1=0+160-1=159