# math

posted by .

The number of square units in the area of circle P is equal to the number of units in the circumference of circle P. Assuming that the diameter of the circle must be greater than P, what is the radius of circle P ?

a. 2
b. 2 pi
c. 4
d. 4 pi
e. cannot be determined from the information given

• math -

pi r^2 = 2pi r
divide by pi*r to get
r=2

Since P is a circle, it makes no sense to say the "diameter must be greater than P".

## Similar Questions

1. ### Algebra 1

A circle is inscribed in a square. The number of square units in the area and the number of units in the perimeter of the square are the same. What is the area of the circle in terms of pi?
2. ### Algebra 1: Help Please URGENT!

A circle is inscribed in a square. The number of square units in the area and the number of units in the perimeter of the square are the same. What is the area of the circle in terms of pi?
3. ### 8th grade math

circle A has a raduis that is twice the length og the raduis of circle B. Which is an accurate statement about the relationship of these areas of circle A and B and y?
4. ### math

A circle has an area of 25 pi cm^2.If a circle is drawn within that circle with a diameter equal to the radius of the first circle, what is the area of the second circle?
5. ### 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
6. ### 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
7. ### Analytic Geometry

A circle at the origin whose is 2 units is 2 is inscribed in a right triangle whose base is 8 units and altitude 6 units. Find a) The equation of the circle b)The area and circumference of the circle c)The area of the right triangle …
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. 3 inches C. 1 inch D. NONE
9. ### geometry

A circle has a center at (8,2). The point is (3,7) is on the circle. What is the area of the circle, to the nearest tenth of a square unit?
10. ### geometry

The endpoints of the diameter of a circle are at (1,2) and (7,-6). What is the circumference of the circle to the nearest tenth of a unit?

More Similar Questions