What is the diameter if circumference is 9?
Circumferences and areas of circles with diameters in inches.
| Diameter (in) | Circumference (in) | Area (in2) |
|---|---|---|
| 9 1/8 | 28.67 | 65.40 |
| 9 1/4 | 29.06 | 67.20 |
| 9 3/8 | 29.45 | 69.03 |
| 9 1/2 | 29.85 | 70.88 |
How big is a 9 in circle?
| Example | |
|---|---|
| Problem | Find the circumference of the circle. |
| Answer | The circumference is 9 or approximately 28.26 inches. |
How many inches is a 9 inch circle?
A 9-inch round cake pan is 63.5 square inches/holds 8 cups of batter.
What is the radius of the circumference is 9?
The circumference of a circle can be found using the formula C=2?r or C=?d. We know the radius of the back wheel is 9 inches, so we can plug this into the formula C=2?r. The formula becomes C=2?(9) which simplifies to 56.52.
What does 9 inch diameter mean?
That’s the measurement for a circle, but the opening is a rectangle. The cutout space for the door is a 9 inch diameter. …
What is the square inches of a 9 inch circle?
9 inch = 64 square inches. 10 inch = 79 square inches. 12 inch = 113 square inches.
What is the circumference of a 9 inch pie?
28.26 inches
The problem tells us that the diameter of the pie is 9 inches. Let’s put this information into the formula and solve for the circumference. The circumference of the pie is 28.26 inches.
How do you find the circumference of a 9cm circle?
How to find the circumference of a circle?
- Multiply the radius by 2 to get the diameter.
- Multiply the result by π, or 3.14 for an estimation.
- That’s it; you found the circumference of the circle.
What is the formula for calculating the circumference of a circle?
To calculate the circumference of a circle, use the formula C = πd, where “C” is the circumference, “d” is the diameter, and π is 3.14. If you have the radius instead of the diameter, multiply it by 2 to get the diameter.
How do you find the area of a circle when you have the circumference?
The area of a circle is given by the formula A = π r2, where A is the area and r is the radius. The circumference of a circle is C = 2 π r. If we “solve for r” in the second equation, we have r = C / (2 π).
How do you measure the circumference of a circle?
To measure the circumference of a circle, first measure the diameter and multiply that number by the mathematical constant pi. The diameter is a straight line that goes from one side of the circle to the other and passes through the center, and the value of pi is always 3.141592. If using the radius, the formula for calculating the circumference is C = 2rpi, or Circumference = 2 times the radius times pi.
How to find the circumference and area of a circle?
Determine the radius of a circle.