jaka powieszchnie ma rondo o średnicy 20m
srednica = 20 m
promien = srednica/2 = 20/2 = 10 m
P=πr²=π*(10m)²=100πm² = (100*3,14)m² ≈ 314 m²
odp:
ma ok. 314 m²
pole koła:
r to promień = 1/2 średnicy, czyli: 10m
Pi == 3,14
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srednica = 20 m
promien = srednica/2 = 20/2 = 10 m
P=πr²=π*(10m)²=100πm² = (100*3,14)m² ≈ 314 m²
odp:
ma ok. 314 m²
pole koła:
r to promień = 1/2 średnicy, czyli: 10m
Pi == 3,14