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Sagot :

Réponse :

Explications étape par étape

Bonjour

A = 3/4 x 28

A = 21

B = 20/100 x 90

B = 18

C = 21/2 + 46/4

C = 42/4 + 46/4

C = 88/4

C = 22

D = 3 x (18 - 8/4 - 8)

D = 3 x (18 - 2 - 8)

D = 3 x (18 - 10)

D = 3 x 8

D = 24

E = (16 + 18)/2

E = 34/2

E = 17

C’est le lutin en chef

F = 7 + 9

F = 16

G = (2 + 2 + 2) x 3

G = 6 x 3

G = 18

H = 144 - 81 - 49

H = 144 - 130

H = 14

I = -(-8 - 5)

I = - (-13)

I = 13

J = (16 + 14)/2

J = 30/2

J = 15

Chocolats de noël

Triangle rectangle :

AB^2 = 10,9^2 - 9,1^2

AB^2 = 118,81 - 82,81

AB^2 = 36

AB = 6 cm

EL^2 = 9^2 + 12^2

EL^2 = 81 + 144

EL^2 = 225

EL = 15 cm

Aire :

A = 35 x 12 / 2

A = 210 cm^2

12 x 6 = 72 cm^2

6 x 20 = 120

4 x 63/2 = 126

La fabrique à jouet

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