Quel est le périmètre de chacune des figures suivantes ? 11+1{,}5\pi cm 14+3\pi cm 14+1{,}5\pi cm 11+3\pi cm 17+3{,}5\pi cm 17-0{,}5\pi cm 17-\pi cm 17+7\pi cm 7+3{,}5\pi cm 6{,}5+3{,}5\pi cm 8+3{,}75\pi cm 6{,}5+3{,}75\pi cm 9+3{,}5\pi cm 9+5\pi cm 8+5\pi cm 9+4{,}5\pi cm 18+3{,}5\pi cm 16+3{,}5\pi cm 17+3{,}5\pi cm 18+1{,}75\pi cm 11+1{,}5\times \pi 14+3\times \pi 14+1{,}5\times \pi 11+3\times \pi 6+3\times \pi 6\times \pi 2+5\times \pi 2+6\times \pi 6+5\times \pi 10+3\times \pi 10+1{,}5\times \pi 5+6\times \pi 16+2{,}75\times \pi 15+2{,}75\times \pi 16+3{,}25\times \pi 15+3{,}25\times \pi 10+3\times \pi 10+4\times \pi 10+4{,}5\times \pi 10+3{,}5\times \pi
