# What is diameter kid definition?

Space and AstronomyKids Definition of diameter 1 : **a straight line that runs from one side of a figure and passes through the center** Measure the diameter of the circle. 2 : the distance through the center of an object from one side to the other : thickness the diameter of a tree trunk. diameter.

## What is diameter short answer?

In geometry, a diameter of a circle is **any straight line segment that passes through the center of the circle and whose endpoints lie on the circle**. It can also be defined as the longest chord of the circle.

## What is diameter in your own words?

Diameter is defined as **the length of a straight line through the center of a circle**. An example of a diameter is the length of a line sliced down the center of a pie.

## How do you find the diameter for kids?

Video quote: *So just like we mentioned in number two there the diameter is all the way across the circle and the radius is from the edge to the center point.*

## What is a diameter class 9?

Diameter is defined as **the line passing through the center of a circle having two extremes on the circumference of a circle**. The Diameter of a circle divided the circle into two equal parts known as semi-circle. The center of a circle is the midpoint of its diameter.

## What is diameter of circle class 10?

The diameter of a circle is **the distance from one point on the surface of a circle to the other point on the circle’s surface, which passes through the centre**.

## What is diameter of a circle definition?

Diameter of a circle

The diameter is **the length of the line through the center that touches two points on the edge of the circle**.

## What is called radius of a circle?

noun, plural ra·di·i [rey-dee-ahy], ra·di·us·es. a straight line extending from the center of a circle or sphere to the circumference or surface: The radius of a circle is **half the diameter**. the length of such a line. any radial or radiating part.

## What is a radius of a circle class 9?

The radius of a circle is **the length of the line from the centre to any point on its edge**.

## Is radius half the diameter?

**A radius is half the length of the diameter**.

## What is the definition of circumference *?

Definition of circumference

1 : **the perimeter of a circle** The circle measures 22 inches in circumference. 2 : the external boundary or surface of a figure or object : periphery from the center to the circumference of the sphere.

## How many diameters can a circle have?

infinitely many

Thus the diameter of the circle is twice as long as the radius. So, **infinitely many** diameters can be formed in the circle.

## What is the decimal for pi?

3.141592653589793238

In decimal form, the value of pi is **approximately 3.14**. But pi is an irrational number, meaning that its decimal form neither ends (like 1/4 = 0.25) nor becomes repetitive (like 1/6 = 0.166666…). (To only 18 decimal places, pi is 3.141592653589793238.)

## How do you work out the radius?

**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 a diameter?

The formula to find the diameter states the relationship between the diameter and the radius. The diameter is made up of two segments that are each a radius. Therefore, the formula is: **Diameter = 2 * the measurement of the radius**. You can abbreviate this formula as d=2r.

## How do you find area with diameter?

The formula for the area A as a function of the diameter d of a circle is given by **A = π (d/2)^2**.

## What is radius and 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.

## What is the diameter of 7 centimeters?

Answer. Here,diameter is 7 cm. So radius is 7/2=**3.5 cm**.

## What is circle name?

**A circle is named by its center**. Thus, the circle to the right is called circle A since its center is at point A. Some real world examples of a circle are a wheel, a dinner plate and (the surface of) a coin. The distance across a circle through the center is called the diameter.

## What is the diameter of the sun?

The mean radius of the sun is 432,450 miles (696,000 kilometers), which makes its diameter about **864,938 miles** (1.392 million km). You could line up 109 Earths across the face of the sun, according to NASA. The sun’s circumference is about 2,715,396 miles (4,370,006 km).

## What is the diameter of a pole?

To find it, measure around the circumference of the pipe with flexible measuring tape. **Divide the circumference by pi, or about 3.14159**. For example, if the circumference is 12.57 inches (319 mm), you would divide by pi, and get an outside diameter of about 4 inches (100 mm).

## What is the diameter of the Uranus?

Uranus is approximately **31,000 miles (50,000 kilometers)** in diameter, or about four times the size of Earth. The Earth is approximately 7,900 miles (12,800 kilometers) in diameter, or about four times the diameter of the Moon, 2,100 miles (3,500 kilometers).

## What is the diameter of Mercury?

Mercury’s diameter is **3,030 miles (4,878 km)**, comparable to the size of the continental United States. This makes it about two-fifths the size of Earth. It is smaller than Jupiter’s moon Ganymede and Saturn’s moon Titan.

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