math

posted by .

the circumference of a circle is 4 inches. Find the radius and area..

  • math -

    c = 2πr = 8π
    a = πr^2 = 16π

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    the radius of a circle when the numeric values of the circumference and the area are equal Start with what you know. If you know the formula the area of a circle, and the formula for the circumference of a circle, then you can set …
  2. Circumference and Area of Circles

    can someone help me with these:Find the radius, diameter and circumference of a circle with an area of 64 cm2. Write your answers as decimals rounded to the nearest hundredth. Find the circumference and area of a circle that has a …
  3. Algebra

    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?
  4. math

    I'm asked to find the circumference of a circle to the nearest tenth and the area of the same circle to the nearest hundredth. The circle has a diameter of 30 and a radius of 15. I got a circumference of 94.2 and an area of 188.48cm2 …
  5. MATH HOMEWORK

    Find the circle circumference and circle area with a circles radius 10 inches I think the circles are is 314 but don't know the circumference.
  6. triggg

    Suppose a circle has a radius of 4.5 inches. If you double the radius of the circle, does the area of the circle double as well?
  7. math

    If the number of square inches in the area of a circle is equal to the number of inches in its circumference,the diameter of the circle is a. 4 inches b. 2 inches c. 1 inches d. pi inches e. 2 pi inches please answer and explain
  8. math

    If the number of square inches in the area of a circle is equal to the number of inches in its circumference,the diameter of the circle is a. 4 inches b. 2 inches c. 1 inches d. pi inches e. 2 pi inches please answer and explain
  9. math

    The area of a circle is given by the formula A = ðr2, where r is the radius. If increasing the radius of a circle by 1 inch gives the resulting circle an area of 100ð square inches, what is the radius of the original circle?
  10. Math

    Find the perimeter of a regular 360-sided polygon that is inscribed in a circle of radius 5 inches. If someone did not remember the formula for the circumference of a circle, how could that person use a calculator’s trigonometric …

More Similar Questions