R=D/2
166.
R=D/2=2/2=1м
S=3,14*=3,14м2
167.
R=D/2=(2 2/5)/2=2,4/2=1,2м
S=3,14*=4,5216 м2
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R=D/2
166.
R=D/2=2/2=1м
S=3,14*
=3,14м2
167.
R=D/2=(2 2/5)/2=2,4/2=1,2м
S=3,14*
=4,5216 м2