Odpowiedź:
z.1
2 r = 6 cm to r = 3 cm
h = 6 cm
Pb =2 π*r*h = 2π*3 cm* 6 cm = 36 π cm²
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z.2
2 π*r = 6 π cm to r = 3 cm
h = 15 cm
l² = r² + h² = 9 + 225 =234 = 9*26
l = 3 √26
Pc = π r^2 + π r*l = π*3² + π*3*3√26 = 9 π + 9π*√26 = 9*( 1 +√26)*π [ cm² ]
Szczegółowe wyjaśnienie:
