Bonjour,
rayon= 2 m
Aire du disque= π x r²
A= π x 2²
A= 12.5663
Aire demi disque= 12.5663/2
A= 6.28315cm²
donc A≈ 6.28 cm²
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Bonjour,
rayon= 2 m
Aire du disque= π x r²
A= π x 2²
A= 12.5663
Aire demi disque= 12.5663/2
A= 6.28315cm²
donc A≈ 6.28 cm²