What is the area of a 30 in diameter circle?
The area of the circle is 706.9 cm2 .
How do you find the area of a circular plate?
The area of a circle is pi times the radius squared (A = π r²).
What is the radius of a 30 cm circumference circle?
Answer: The circumference of a circle with a diameter of 30 centimeters would be 94.25 centimeters. The diameter of a circle is given by joining any two points on the circle such that the line passes through the center. In other words, the diameter of a circle is twice its radius i.e., 2r.
What is area if you have 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 ). Now we use this to replace r in the first equation: A = π [ C / (2 π ) ]2.
What is the radius of a 30 circle?
Therefore, if the diameter is equal to 30m, then the two radii equals 30m. However, you want the radius, so half of 30m ( 302 ) is 15m.
How do you find the radius from the circumference calculator?
To find the radius from the circumference of a circle, you have to do the following:
- Divide the circumference by π, or 3.14 for an estimation. The result is the circle’s diameter.
- Divide the diameter by 2.
- There you go, you found the circle’s radius.
How do you find the circumference of a circular plate?
Answer
- Given: Radius of the circular plate = 28 cm.
- To find: The circumference of the circular plate.
- Solution: The formula for the circumference of a circular plate = 2 × π × r. Here r is the radius of the circular plate and we will take the value of π as 22/7. Putting the values we get: = 2 × 22 / 7 × 28.
How do you find the circumference and area of a circle?
To find the circumference, you double the radius and multiply by pi. To find the area, you square the radius and multiply by pi.
What is the radius of a 30 diameter circle?
How do I find circumference of a circle?
The circumference is the distance around a circle. In other words, it’s the perimeter of the circle. And we find the circumference by using the formula C = 2πr.
How do you find the area of a circle using the circumference?
The formula C = 2√πA is designed to find a circle’s circumference using the area (A). Alternatively, you can solve the equation A = πR2 in reverse to find R, then plug R into the circumference equation. Both equations provide the same result.