Réponse:
P = (π × d )/2
P = ( 3,14 × 11 )/2
P = 17,27 cm
P = 7 + 11 = 18 cm
A =( r² × π) /2
= (5,5² × 3,14)/2
= 47,49 cm²
A= C×C ÷2
= 11 × 7 ÷2
=38,5 cm²
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Réponse:
P = (π × d )/2
P = ( 3,14 × 11 )/2
P = 17,27 cm
P = 7 + 11 = 18 cm
A =( r² × π) /2
= (5,5² × 3,14)/2
= 47,49 cm²
A= C×C ÷2
= 11 × 7 ÷2
=38,5 cm²