Cześć!
b)
[tex]\text{P}=a\cdot h\\\\a=5\sqrt3, \ h=2\sqrt6\\\\\text{P}=5\sqrt3\cdot2\sqrt6=10\sqrt{3\cdot6}=10\sqrt{18}=10\sqrt{9\cdot2}=10\cdot3\sqrt2\\\\\boxed{\text{P}=30\sqrt2}\\\\\text{Ob}=2\cdot3\sqrt3+2\cdot5\sqrt3=6\sqrt3+10\sqrt3\\\\\boxed{\text{Ob}=16\sqrt3}[/tex]
c)
[tex]\text{P}=\frac{1}{2}\cdot a\cdot h\\\\a=4\sqrt5, \ h=2\sqrt3\\\\\text{P}=\frac{1}{2}\cdot4\sqrt5\cdot2\sqrt3=\frac{1}{2}\cdot4\cdot2\cdot\sqrt{5\cdot3}\\\\\boxed{\text{P}=4\sqrt{15}}\\\\\text{Ob}=2\cdot4\sqrt2+4\sqrt5\\\\\boxed{\text{Ob}=4(2\sqrt2+\sqrt5)}[/tex]
