The radius of a circle is half the length of the circumference. So multiply 12 by itself and you get 24. The answer is C.
Q. What is true about spheres?
A Sphere is a three-dimensional ball-shaped object. In order to be a true sphere, an object must be completely symmetrical, meaning that any individual point on its surface will be exactly the same distance from the center as every other point.
Q. What is the exact circumference of a circle with a radius of 12 inches 6π inches 12π inches 24π inches 48π inches?
So, the circumference of the circle is 12.6 inches when rounded to the nearest tenth.
Q. Which is the exact area of a circle with a radius of 12 inches?
2 Answers. The area of the circle is 452 .
Q. What is the diameter of 12 inches?
Circumference & Areas
| Size in Inches | Circumference Inches | Area in Square Inches |
|---|---|---|
| 12 | 37.700 | 144.000 |
| 12 1/4 | 38.480 | 150.060 |
| 12 1/2 | 39.270 | 156.250 |
| 12 3/4 | 40.060 | 162.560 |
Q. What is the area of the radius is 9?
What is the area of a circle with a DIAMETER of 9 inches (radius of 4.5 inches)?…Area of a 9 Inch Circle.
| 63.617 | square inches |
|---|---|
| 0.049087 | square yards |
| 410.43 | square centimeters |
| 0.041043 | square meters |
Q. What is the area of a 10 inch circle?
How big is a 10 inch circle?…Area of a 10 Inch Circle.
| 78.540 | square inches |
|---|---|
| 0.060602 | square yards |
| 506.71 | square centimeters |
| 0.050671 | square meters |
Q. What is the area of a 9 inch pizza?
63.62 square inches
Q. What is the formula for the length of a chord?
Chord Length Formula
| Formula to Calculate Length of a Chord | |
|---|---|
| Chord Length Using Perpendicular Distance from the Center | Chord Length = 2 × √(r2 − d2) |
| Chord Length Using Trigonometry | Chord Length = 2 × r × sin(c/2) |
Q. Is a chord a diameter?
Why a diameter is the longest chord in a circle? A segment of a straight line joining two points on a circle is called a chord; a chord that passes through the center of the circle is called a diameter. (Ambiguously, the word “diameter” also denotes the length of a diameter.)
Q. What is a radius and a diameter?
The diameter is a straight line that passes through the center of the circle. The radius is half of the diameter. It starts from a point on the circle, and ends at the center of the circle.
Q. How do you teach diameter and radius?
Answer: Radius = 4 in., diameter = 8 in., circumference =25.12 in. The diameter is always twice as long as the radius. So, if our diameter is 6 feet, the radius must be half as long as that. So the radius is 3 feet long.
Q. What is the diameter of 65mm circle?
A circle of radius = 32.5 or diameter = 65 or circumference = 204.2 mm has an area of: 3.318 × 10-9 square kilometers (km²)
