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x*3=2*6>
x=4 R^2=(7/2)^2+4=
(49/4)+4=(49+16)/4=65/4=16.25
>R=4.031
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2x6=ax3. a=12/3=4. 4 r^2=2^2+3^2+6^2+4^2. 4r^2=4+9+36+16=65 r^2=65/4. r=√65/2=8,0622/2=4,03112 cm
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