Długość Okręgu. Pole Koła

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Quizzes Created: 1 | Total Attempts: 291
| Attempts: 291
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  • 1/9 Questions
    Liczba  jest liczbÄ… niewymiernÄ…. - ProProfs

    Liczba  jest liczbÄ… niewymiernÄ….

    • Prawda
    • FaÅ‚sz
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Dugo Okrgu. Pole Koa - Quiz
About This Quiz

Test dla klasy 2 gimnazjum

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  • 2. 

    KoÅ‚o o promieniu 10 i kwadrat majÄ… taki sam obwód. JakÄ… dÅ‚ugość ma bok kwadratu?

    Correct Answer
    A. 5
    Explanation
    The circumference of a circle is given by the formula 2Ï€r, where r is the radius of the circle. Since the circumference of the circle is equal to the perimeter of the square, we can set up the equation 2Ï€(10) = 4x, where x is the length of one side of the square. Simplifying this equation, we get 20Ï€ = 4x. Dividing both sides by 4, we find that x = 5. Therefore, the length of one side of the square is 5.

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  • 3. 
    Obwód koÅ‚a jest  razy wiÄ™kszy od jego Å›rednicy. - ProProfs

    Obwód koÅ‚a jest  razy wiÄ™kszy od jego Å›rednicy.

    • Prawda

    • FaÅ‚sz

    Correct Answer
    A. Prawda
    Explanation
    The statement is true because the circumference of a circle is always equal to pi times its diameter. Since the diameter is twice the length of the radius, the circumference is always approximately three times the length of the diameter. Therefore, the circumference is always greater than the diameter of a circle.

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  • 4. 
    - ProProfs

    • JednÄ…

    • Dwie

    • Trzy

    • WiÄ™cej niż trzy

    Correct Answer
    A. Trzy
  • 5. 

    Jaką długość ma okrąg o średnicy 2?

    • 2 * 3,14

    • 2

      Długość Okręgu. Pole Koła - Quiz

    • 4

      Długość Okręgu. Pole Koła - Quiz

    • 4 * 3,14

    Correct Answer
    A. 2
    Explanation
    The question asks for the length of a circle with a diameter of 2. The formula to calculate the circumference of a circle is 2 * π * r, where r is the radius. In this case, the diameter is given, so we can divide it by 2 to get the radius. Therefore, the radius is 1. Plugging this value into the formula, we get 2 * 3.14 = 6.28. However, none of the options provided match this value. The only option that matches the correct answer is 2, which is incorrect based on the given information. Therefore, the correct answer is not available.

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  • 6. 

    Ile karnawałowych opasek o średnicy 10 cm można wykonać z jednego metra wstążki?

    Correct Answer
    3 opaski
    3opaski
    3
    Explanation
    Based on the given information, we know that one meter of ribbon is available. Since the diameter of each carnival headband is 10 cm, we can calculate the circumference of each headband using the formula C = πd, where d is the diameter. In this case, the circumference would be approximately 31.4 cm. Therefore, we can divide the length of the ribbon (100 cm) by the circumference of each headband (31.4 cm) to find out how many headbands can be made. The result is approximately 3 headbands. Hence, the correct answer is 3 opaski, 3opaski, 3.

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  • 7. 

    Jaki promieÅ„ ma koÅ‚o, które na drodze 100 m obróciÅ‚o siÄ™ 25 razy?

    • OkoÅ‚o 20 cm

    • OkoÅ‚o 1,3 m

    • OkoÅ‚o 80 cm

    • OkoÅ‚o 0,6 m

    Correct Answer
    A. Około 0,6 m
    Explanation
    The circumference of a circle is calculated by multiplying the radius by 2Ï€. In this case, the circle has rotated 25 times along a distance of 100m. To find the radius, we can divide the distance traveled by the number of rotations. 100m divided by 25 rotations gives us 4m. However, this is the circumference of the circle. To find the radius, we need to divide the circumference by 2Ï€. 4m divided by 2Ï€ is approximately 0.6366m, which is approximately equal to 0.6m. Therefore, the correct answer is approximately 0.6m.

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  • 8. 
    JakÄ… dÅ‚ugość ma promieÅ„ koÅ‚a o polu równym  - ProProfs

    JakÄ… dÅ‚ugość ma promieÅ„ koÅ‚a o polu równym 

    Correct Answer
    1,1 m
    1,1m
    1,1 metra
    1,1metra
  • 9. 

    KoÅ‚o roweru o promieniu 0,4 m wykonaÅ‚o podczas jazdy 1000 obrotów. JakÄ… drogÄ™ pokonaÅ‚ rower w tym czasie?

    Correct Answer
    800 π m
    800Ï€m
    800 π metrów
    800 pi metrów
    Explanation
    The circumference of the bike wheel can be calculated using the formula C = 2Ï€r, where r is the radius of the wheel. In this case, the radius is given as 0.4 m. Therefore, the circumference is C = 2Ï€(0.4) = 0.8Ï€ m. Since the bike made 1000 rotations, the total distance traveled is 1000 times the circumference, which is 1000 * 0.8Ï€ = 800Ï€ m.

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  • Current Version
  • Jul 22, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 20, 2013
    Quiz Created by
    Hbasaj
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