H = 2r = 2*23√3 = 46√3
sin 60 = h/a
a = h/sin60 = (46√3)/(√3/2) = 92
Ответ: 92.
12-(х + 11/80) = 247/24
12-х-11/8=247/24
85/8-х=247/24
-х= 247/24-85/8
-х=-1/3
х=1/3
720:(100-x)=95+85
720:(100-x)=180
(100-x)=720:180
(100-x)=40
x=100-40
x=60
1) 4/5 И 1/3 = 12/15 и 5/15
2) 4/7 И 11/14 = 8/14 и 11/14
3)7/36 И 7/24 = 14/72 и 21/72
4)111/375 И 103/300 =444/1500 и 515/1500