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QUIZ

9th
grade

Mathematics

43%

accuracy

42

plays

User image

5 years

Mathematics

9th

grade

Aria discului, lungimea cercului

user

42
plays

7 questions

7 questions

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1. Multiple Choice
2 minutes
1 pt
Lungimea cercului cu raza de 3 cm este
3 $\pi$ cm
6 $\pi$ cm
9 $\pi$ cm
1,5 $\pi$ cm
2. Multiple Choice
2 minutes
1 pt
Lungimea cercului cu diametrul de 5 cm este :
10 $\pi$ cm
5 $\pi$ cm
2,5 $\pi$ cm
3. Fill in the Blank
1 minute
1 pt
Care este raza unui cerc, știind că lungimea cercului este de 8 $\pi$ cm ?

( scrieți valoarea și nu uitați de unitatea de măsură)
4. Multiple Choice
30 seconds
1 pt
Aflați aria discului cu raza de 4 cm
8 $\pi$ $cm^2$
16 $\pi$ $cm^2$
4 $\pi$ $cm^2$
5. Multiple Choice
30 seconds
1 pt
Care este lungimea diametrului unui disc, știind că aria lui este de 25 $\pi$ $cm^2$
5 cm
5 $\pi$ cm
10 cm
10 $\pi$ cm
6. Multiple Choice
30 seconds
1 pt
Lugimea semicercului din desen este
5 $\pi$ $cm^2$
10 $\pi$ $cm^2$
5 $\pi$ cm
10 $\pi$ cm
7. Fill in the Blank
3 minutes
1 pt
Determinați aria suprafeței verzi din desen ( utilizația valoarea lui $\pi$ = 3,14)
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