What is the circumference with the radius of 4 ft?
Table of Contents
What is the circumference with the radius of 4 ft?
8 π
Answer: The circumference of a circle with a radius of 4 is 8 π.
What is the circumference if the diameter is 4?
which can be calculated to 12,566 cm.
How big around is a 4 foot circle?
With that said, the answer is 5π ft. The formula for the circumference of a circle is C = pi x d, where C is circumference, pi is 3.14, and d is diameter.
What is circumference of a 4 circle?
The circumference of a circle is given by. c=πd. Where c is the circumference, π is a number and its approximate value is 3.14 and d is its diameter. ⇒c=π4=3.14⋅4=12.56 inches.
What is circumference of 4cm?
The circumference is 8πcm or 25.12cm .
What is the diameter of a 4 circle?
Circumferences and areas of circles with diameters in inches.
| Diameter (in) | Circumference (in) | Area (in2) |
|---|---|---|
| 4 1/8 | 12.96 | 13.36 |
| 4 3/16 | 13.16 | 13.77 |
| 4 1/4 | 13.35 | 14.19 |
| 4 5/16 | 13.55 | 14.61 |
How do you find the circumference with the radius?
The perimeter or circumference of the circle can be found using the equation C=2π(r), where r= the radius of the circle. Since we have two semi-circles we can find the circumference of one whole circle with a radius of 4, which would be 8π.
How do you convert radius to circumference?
To calculate the circumference, you need the radius of the 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 circumference when the radius is 4cm?
How many inches is 4 feet in diameter?
2 Answers By Expert Tutors. 4ft * 12 in / ft = 48 in. 2r = 48 in.
What is the scale factor of a circle of 4 feet radius?
First circle of 4 feet radius has circumference.. (C1) i.e 2πr and replacing the value of r as 4 ft.. 8π … (1). Next the Second Circle of 9 ft the circumference (C2) i.e 2πr and by the value of r as 9 ft we get… 18π … (2). Therefore the scale factor of the smaller one to the bigger one will be in the following ratio… 100 : 225 is the answer.
How do you find the circumference of a 4 inch circle?
For example, the circumference of a circle with a radius of 4 inches is simply 2 x 3.14159 x 4 = 25.13 inches. If the diameter is given instead, first divide it by two, then repeat the above process. For example, if the diameter is 16 feet, then the radius is 16 / 2 = 8 feet.
What is the radius of a 16 foot circle?
For example, if the diameter is 16 feet, then the radius is 16 / 2 = 8 feet. The circumference is therefore 2 x 3.14159 x 8 = 50.26 feet. Circles are often used by architects for athletic tracks, recreational areas, buildings, and roundabouts.
What is the area and circumference of circle calculator?
Area = 201.1429 in² Area and circumference of circle calculator uses radius length of a circle, and calculates the perimeter and area of the circle. It is an online Geometry tool requires radius length of a circle. Using this calculator, we will understand methods of how to find the perimeter and area of a circle.