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Eevee
Lv 4
Eevee asked in Science & MathematicsMathematics · 1 decade ago

I need help with a math problem and it is an emergency!!?

The ratio of the circumferences of two circles is 4:1. What is the ratio of the areas of these two circles?

A) 2:1

B) 4:1

C) 8:1

D) 16:1

5 Answers

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  • Anonymous
    1 decade ago
    Favorite Answer

    The ratio of the areas of the circles is the square of the ratio between the circumferences.

    Therefore, the ratio of the areas is 4^2:1^2 = 16:1.

    I hope this helps!

  • TomV
    Lv 7
    1 decade ago

    The correct answer is 16 to 1, D

    Since the areas of the circles are proportional to the square of the circumferences, and the circumferences are in a ratio of 4 to 1, the square of the circumferences are in the ratio of 4² to 1² = 16 to 1.

    ...

  • 1 decade ago

    Circumfrnce = 2 pie R.

    Ratio = R'/R" = 4/1 (i.e 4:1)

    Area = pie R^2

    Ratio = R'^2/R"^2

    = 4^2/1^2

    = 16/1 = 16:1

    Happy new year Eevee! It's my 1st ans 4d year.

    We can be friends u knw?

  • 1 decade ago

    16 to 1, just say ur radii are 4 and 1, if you square those itll be 16 and 1, just trust me

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  • Anonymous
    1 decade ago

    very easy. It's C.

    Remember that area circles are 2x the circumference circle.

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