1.7*5=35
2.V=1/3*S*h
r=sqrt(l^2-h^2)
l=4
h=sqrt3
r=sqrt13 d=2r=2*sqrt13
a^+a^2=d^2
2*a^2=52
a=sqrt26
S=26
V=26*sqrt3/3
1.7*5=35
2.V=1/3*S*h
r=sqrt(l^2-h^2)
l=4
h=sqrt3
r=sqrt13 d=2r=2*sqrt13
a^+a^2=d^2
2*a^2=52
a=sqrt26
S=26
V=26*sqrt3/3