Oblicz obwód koła o polu 36pi :D:D
36pi=pi r (kwadrat) /:pi
36=r(kwadrat)
pierwiastek z 36=6=r
Lk=2pi r
Lk=2pi6
Lk=12pi
P=πr²
P=36π
36π=πr² /:π
36=r² /:√
r=6
O=2πr
O=2π*6
O=12π
O=12*3,14
O=≈37,68
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36pi=pi r (kwadrat) /:pi
36=r(kwadrat)
pierwiastek z 36=6=r
Lk=2pi r
Lk=2pi6
Lk=12pi
P=πr²
P=36π
36π=πr² /:π
36=r² /:√
r=6
O=2πr
O=2π*6
O=12π
O=12*3,14
O=≈37,68