1. r=obw/2<pi>r=7/6,28r=1,11 cm2.<pi>r<kwadrat>=10r<kwadrat>=10/pir<kwadrat>=3,18r=<w pierwiastku>3,18r=1,78d=2rd=3,563.<pi>r<kwadrat>=25r<kwadrat>=25/pir<kwadrat>=7,96r=<w pierwiastku>7,96r=2,82d=5,64<pi>d=3,14*5,64=17,714.odw=<pi >d=obw/pid=30/3,14d=9,55r=4,78P=<pi>r<kwadrat>p=3,14*4,78<kwadrat>p=71,75
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1. r=obw/2<pi>
r=7/6,28
r=1,11 cm
2.
<pi>r<kwadrat>=10
r<kwadrat>=10/pi
r<kwadrat>=3,18
r=<w pierwiastku>3,18
r=1,78
d=2r
d=3,56
3.
<pi>r<kwadrat>=25
r<kwadrat>=25/pi
r<kwadrat>=7,96
r=<w pierwiastku>7,96
r=2,82
d=5,64
<pi>d=3,14*5,64=17,71
4.odw=<pi >
d=obw/pi
d=30/3,14
d=9,55
r=4,78
P=<pi>r<kwadrat>
p=3,14*4,78<kwadrat>
p=71,75