Table of Contents
How do you convert feet to radius?
Divide the arc length by the angle in radians to find the radius. If the arc length is 2 feet and the angle is π/4, the radius is 2.546 feet. Multiply the area of a sector by 2, divide it by the measurement of the sector’s angle and then calculate the square root of that number to find the radius.
What is the radius in feet?
Earth’s Equatorial Radius to Foot Conversion Table
| Earth’s Equatorial Radius | Foot [ft] |
|---|---|
| 10 Earth’s equatorial radius | 209257217.84777 ft |
| 20 Earth’s equatorial radius | 418514435.69554 ft |
| 50 Earth’s equatorial radius | 1046286089.2388 ft |
| 100 Earth’s equatorial radius | 2092572178.4777 ft |
What is Earth’s radius?
3,958.8 mi
Earth/Radius
According to data taken by 183 high-school classes participating in a World Year of Physics project, “Measure the Earth with Shadows”, the radius of Earth is 6563 km, compared to the accepted value for the mean radius of 6371 km.
What is the formula of radius of Earth?
(C = 2πr) With this information, Eratosthenes inferred that the Earth’s radius was 6366 km. Both of these values are very close to the accepted modern values for the Earth’s circumference and radius, 40,070 km and 6378 km respectively, which have since been measured by orbiting spacecraft.
How big is the radius of the Earth?
Earth radius is the distance from Earth’s center to its surface, about 6,371 km (3,959 mi). This length is also used as a unit of distance, especially in astronomy and geology, where it is usually denoted by R⊕.
How to find the radius of an area?
It’s also straightforward to find the area if you know the radius: a = pi r^2 a = πr2 Using the Radius Calculator You can enter the radius and then compute diameter and circumference in mils, inches, feet, yards, miles, millimeters, centimeters, meters and kilometers.
And they are radius (r) and diameter (d). Diameter is the distance from one side of the circle to the other, crossing through the center/ middle of the circle. The radius is half of the diameter.
Which is an example of a radius in real life?
A real-life and original example of a radius is the spindle of a bicycle wheel. A 9-inch pizza is an example of a diameter: when a person makes the first cut to slice a round pizza pie in half, this cut is the diameter of the pizza. So a 9-inch pizza has a 9-inch diameter.