V48-V192*sin^2*(19П)/2 V-квадратный корень
V48-V192*sin^2*(19П)/2 =V(16*3)-V(4*16*3)*Sin^2 (9 П+ П/2)=4V3-2*4V3*sin^2(3 П/2)=4V3-8V3*1=-4V3
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V48-V192*sin^2*(19П)/2 =V(16*3)-V(4*16*3)*Sin^2 (9 П+ П/2)=4V3-2*4V3*sin^2(3 П/2)=4V3-8V3*1=-4V3