АС=СБ=АВ=х
х=2*h/√3
x=2*2√3/√3=4
sin/_AB1B=AB/AB1
0,5=4/AB1
AB1=8
B1B=√AB1²-AB²=√64-16=√48=4√3
S=ph
p=3*x=3*4=12
S=12*4√3=48√3
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АС=СБ=АВ=х
х=2*h/√3
x=2*2√3/√3=4
sin/_AB1B=AB/AB1
0,5=4/AB1
AB1=8
B1B=√AB1²-AB²=√64-16=√48=4√3
S=ph
p=3*x=3*4=12
S=12*4√3=48√3