What is the radius of a 7 inch circle?
What is the radius of a 7 inch circle?
What is the area of a circle with radius 7 inches?
| Result: The area of a circle with radius 7 is 153.9 | |
|---|---|
| Formulae: | |
| r = 7 d = 14 C = 44 | A = πr2 = π(d2)2 A = C24π π = 3.1415 A = area C = circumference or perimeter r = radius, d = diameter |
What is the diameter of a 7cm circle?
Answer. Here,diameter is 7 cm. So radius is 7/2=3.5 cm.
What is the length around a circle called?
The distance around a rectangle or a square is as you might remember called the perimeter. The distance around a circle on the other hand is called the circumference (c).
How do you find the length of a radius?
How to find the length of an arc and sector area: an example
- Decide on the radius of your circle.
- What will be the angle between the ends of the arc?
- Calculate the arc length according to the formula above: L = r * θ = 15 * π/4 = 11.78 cm .
- Calculate the area of a sector: A = r² * θ / 2 = 15² * π/4 / 2 = 88.36 cm² .
How fast is the area of a circle increasing?
The area of a circle increases at a rate of 6 cm^2/s | Wyzant Ask An Expert. Riri M.
What happens if you double the radius?
In two dimensions the answer is simply: as the radius increases, the area increases by the square of the increasing factor. That’s a bit abstract, so let’s give some examples. If the radius doubles, that’s a factor of 2. The square of 2 is 4, so if the radius doubles the area is multiplied by 4.
Is diameter considered a chord?
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.
Which is the longest diameter?
For example, conjugate diameters have the property that a tangent line to the ellipse at the endpoint of one diameter is parallel to the conjugate diameter. The longest diameter is called the major axis.
When can we say that a chord is a diameter?
Example: the line segment connecting two points on a circle’s circumference is a chord. When the chord passes through the center of a circle it is called the diameter.
What is the formula of a chord?
r is the radius of the circle. c is the angle subtended at the center by the 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) |
When can you say that a church is a diameter?
Answer. Answer: When the chord passes through the center of a circle it is called the diameter.
What is a good sentence for the word diameter?
Examples of diameter in a Sentence The dotted line indicates the diameter of the circle. What is the diameter of the tree trunk? Dig a hole that’s two feet deep and three feet in diameter.
What is a antonym for diameter?
Opposite of the measure of an object’s width, depth or breadth. thinness. height. slenderness. slimness.