Bonsoir,
Bleu
(3,14 *5²)/2 =39,25 => 39,5 cm²
Vert :
(3,14*2²) * 3/4 = 9,42 => 9,4cm²
rose
(3,14 * 3,4²) /4 =9,0746 => 9,1cm²
orange:
(3,14 * 8,5²)/2 =117,436 => 117, 4 cm²
