CORRECTION TRAVAIL SUR LES VOLUMES

**MFolcher** Admin Messages : 112 Date d'inscription : 21/03/2020

Exercice 1

V = 105m³
D = 26,25 m³/h = 26,25:60 m³/min = 0,438 m³/min

Exercice 2

1) A_cuisine = 19m²
(3*5)+2² = 19m²

2) V_cuisine = 47,5m³
19*2,5 = 47,5m³

3) 570m³/h
12*47,5 = 570m3

4) Il faut 5min.
47,5:9,5 = 5min

Exercice 3

1)56 549 cm³
pi*60²*5 = 56 549 cm³

2)15*15*70 = 15 750 cm³

3) 72,299 dm³
56 549+15 750 = 72 299 cm³
72 299*0,001 = 72,299 dm³ = 72,3 L

Exercice 4

1)a)(2*5,2)+(2*1,15) = 12,7m
b)5,2*1,15 = 6m²

2)6*0,1 = 0,6m³

3)AC = racine carrée (5,2² + 1,15²) = 5,3 m Pythagore

Exercice 5

1)V1 = 1,5*1,8*2,2 = 5,94m³

2)V2 = 7,5-5,94 = 1,56m³

Exercice 6
V = 20*20*50 = 20000cm³ = 20 L

Exercice 7

Losange, trapèze, triangle rectangle
AD = 78cm
A = ((78 +150) :2) *60 = 6840 cm²

V = 6840 * 5 = 34200cm³ = 34,2L