... khỏng un (cm3) 300 300 250 200 200 15 0 15 0 10 0 18 00 15 00 12 00 12 00 90 0 90 0 750 600 55 55 55 55 55 55 55 55 28,46 28,46 22 ,58 20,02 20,02 17 ,63 17 ,63 15 ,68 6 ,55 6 ,55 4 ,57 4,42 4,42 4,3 4,3 4,08 ... 6.2 .1. 2.2 S o t bng th cụng 1, 1 V ( [1, 75 .16 ,7 (1, 75 4, 75) . (16 ,7 19 , 7) 4, 75. 19 , 7]).3 19 7 ,67(m ) 1, 1 V ( [11 ,4 .16 ,7 (11 ,4 14 ,4). (16 ,7 19 , 7) 14 ,4. 19 , 7]) 2 59 , 083(m3 ) Tng th tớch t phi o l: V = 15 32 ,5 ... =h1+ h2+ h3+ h4 Hy/c = (0,7+3)+0 ,5 +1+ 2 = 7,2(m) Hch =h1+h2 +h3=(0,7+3)+0 ,5 +1= 5, 2 (m) Qy/c = 1, 1 x 7 ,5 = 8, 25 (T) Lyc a b cos H yc - c r tg 5, 1, 5 sin 75o 7, -1 ,5 tg 75o 1, 5 1, 5 13 ,5m cos 75 3,03m...