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pk="pi" r kwadrat
pk="pi"(4m)kwadrat
pk=16"pi"m
rd=6m
pd="pi"r kwadrat
pd=""pi"(6m)kwadrat
pd=36"pi"m
Pś= 36"pi"m-16"pi"m
pś=20"pi"m
pś=20mrazy3.14
pś=62.8m
r1 = 8m / 2 = 4 m
P1 = πr² {
P1 = 16π m²
P.S ; oznacz sobie d,r,P . z jedynkami na dole .
r2 = 6 m
P2= πr²
P2 = 36 π m ²
P = P2 - P1 = 36 π m ² - 16 π m ² = 20 π m ²
P.S ; tutaj r,P . z dwójkami na dole .