Bonjour,

P1

un rectangle et un cercle

Rectangle

2*L

2*90 =>180 m

cercle (1/2 + 1/2)

2pir

2*3,14 * 32,5=> 204,1m

total

180+ 204,1 => 384,1m

Aire:

L*l

90*65 =>5 850m²

pir²

3,14 * 32,5 * 32,5 => 3 316,625m²

Total:

5 850 + 3 316,625 => 9 166,625 m²

P2

rectangle

70*3 = 210cm

1/2 cercle:

pir

3,14 * 35 => 109,9cm

total

210 + 109,9 =>319,9cm

aire

rectangle

70*70 => 4 900cm²

1/2 cercle:

(Pir²)/2

(3,14 * 35 *35)/2 =>1 923,25cm²

total:

4 900 + 1923, 25 =>6 823,25cm²