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