Algebra

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The Circumference and area of a circle of radius r are givin by 2 [pie] r and [pie] r[2], respectively use 3.14 for the constant [pie]

A. What is the circumference of a circle with a radius of 2 m?

B.What is the area of a circle with a radius of 2 m?

C. The earth has a radius of about 3960 miles. Approximately how long is the equator?

  • Algebra -

    Solve these problems.

    A. C = 2*2*3.14

    B. A = 3.14*2*3.14*2

    C. C = 3.14*2*3960

    We'll be glad to check your answers.

  • Algebra -

    A. C = 12.14?

    B. A = 18.84. 28?

    C. C = 24868.8?

  • Algebra -

    A. Please do the multiplication again. You're close but not right.

    B. I mistyped the formula above. It should be:
    A = 3.14*2*2

    C. You're right! :-)

  • Algebra -

    A. C= 12.56

    B. A= 12.56

    C. Alright!

  • Algebra -

    Yay! You have all of them right now. The only addition is that the answer to B is 12.56 square meters.

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