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48+x^2=4x^2
48=3x^2 /:3
16=x^2 /:√
x=4
4. 4^2+h^2=8^2
16+h^2=64
h^2=64-16
h^2=48 /:√
h=4√3P= (a+b)*h: 2
P=(8+16)*4√3:2=24*4√3:2=12*4√3=48√3
1. (EB)^2= 5^2+5^2
(EB)^2= 25+25
(EB)^2= 50 /:√
EB=5√2
Ob=5√2+5+5= 10+5√2
6^2+6^2= DC^2
36+36=DC^2
72=DC^2
DC=6√ 2
OB=6+6+6√2=12+6√2
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