Oblicz obwód i pole półkola o promieniu 6 cm. Z góry dzięki, daje naj ;]
r=6cm
l=½*2πr=πr=π*6cm=6πcm
P=½*πr²=½*π*(6cm)²=½π*36cm²=18πcm²
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r=6cm
l=½*2πr=πr=π*6cm=6πcm
P=½*πr²=½*π*(6cm)²=½π*36cm²=18πcm²