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Calcul de l'Aire et du Périmètre des Trapèzes Rectangles (A)

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(1)

Aire et P´erim`etre des Trap`ezes (A)

Calculez le p´

erim`

etre et l’aire de chaque trap`

eze.

1.

21 dam 23 ,4 dam 11,8 dam 20 ,7 dam

P = ?

A = ?

2.

14,2 mi 20 ,4 mi 6,5 mi 18 mi

P = ?

A = ?

3.

10 ,7 m 15,2 m 5 m 13,6 m

P = ?

A = ?

4.

7,9 dam 16 ,5 dam 11,7 dam 15 ,5 dam

P = ?

A = ?

5.

14 ,6 mi 20,8 mi 15 ,1 mi 19,2 mi

P = ?

A = ?

6.

6 ,8 dm 19,2dm 14 ,2 dm 17,4 dm

P = ?

A = ?

MathsLibres.com

(2)

Aire et P´erim`etre des Trap`ezes (A) R´eponses

Calculez le p´

erim`

etre et l’aire de chaque trap`

eze.

1.

21 dam 23 ,4 dam 11,8 dam 20 ,7 dam

P =

76,9 dam

A =

339,48 dam2

2.

14,2 mi 20 ,4 mi 6,5 mi 18 mi

P =

59,1 mi

A =

186,3 mi2

3.

10 ,7 m 15,2 m 5 m 13,6 m

P =

44,5 m

A =

106,76 m2

4.

7,9 dam 16 ,5 dam 11,7 dam 15 ,5 dam

P =

51,6 dam

A =

151,9 dam2

5.

14 ,6 mi 20,8 mi 15 ,1 mi 19,2 mi

P =

69,7 mi

A =

285,12 mi2

6.

6 ,8 dm 19,2dm 14 ,2 dm 17,4 dm

P =

57,6 dm

A =

182,7 dm2

MathsLibres.com

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