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Sfide su Cerchi e Algebra

Authored by Stefania Sotira

Mathematics

7th Grade

Used 1+ times

Sfide su Cerchi e Algebra
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27 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Calcola l'area di un cerchio con raggio 5 cm.

15π cm²

30 cm²

25π cm²

20π cm²

2.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Qual è la circonferenza di un cerchio con diametro 10 cm?

20.00 cm

31.42 cm

15.70 cm

25.12 cm

3.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Quanto vale x nella seguente equazione?

2x + 3 = 11.

4

5

2

3

4.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Semplifica: 3x+2x−x

4x

4

5x

3x

5.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Semplifica l'espressione: (3a + 2a)2.

5a2

25a

25a2

5a

6.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Qual è l'area di un cerchio con raggio 3 m?

12.56 m²

18.84 m²

31.42 m²

28.27 m²

7.

MULTIPLE CHOICE QUESTION

30 sec • 5 pts

Calcola la circonferenza di un cerchio con raggio 4 m.

8π m

4π m

16π m

12 m

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