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  3. What is the area of a circle with a circumference of 14π inches? The equation f

What is the area of a circle with a circumference of 14π inches? The equation f

游客2024-01-12  39
问题 What is the area of a circle with a circumference of 14π inches?
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答案  The equation for the area of a circle is A=πr2. The equation for the circumference of a circle is C=2πr. Since you are given the circumference, you can use that to find the radius, r, and then use the radius to find the area:
   14π=2πr
     14=2r
      r=7
   Now substitute r into the equation for area:
   Area=π(72)
   Area=49π
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