Z podanych wzorów wyznacz wskazane wielkości :
wyznacz h
P = 2·π·r·(r+h)
2πr(r+h) = P /:2πr
r+h = P/2πr
h = P/2πr - r
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P = 2·π·r·(r+h)
2πr(r+h) = P /:2πr
r+h = P/2πr
h = P/2πr - r