How do you find the radius of a sphere?

How do you find the radius of a sphere?

How to Calculate the Radius of a Sphere?

1. Radius = Diameter / 2. When the surface area is given, the formula used for the radius of a sphere is:
2. Radius = ⎷[Surface Area / (4 π)] When the volume is given, the formula used for the radius of a sphere is:
3. Radius = ³⎷[3 * Volume / (4 π)]

What is arc in a circle?

The arc of a circle is defined as the part or segment of the circumference of a circle. A straight line that could be drawn by connecting the two ends of the arc is known as a chord of a circle.

What is arc radius?

Definition: The radius of an arc or segment is the radius of the circle of which it is a part. When constructing them, we frequently know the width and height of the arc and need to know the radius. This allows us to lay out the arc using a large compass.

How do you find the arc?

The arc length of a circle can be calculated with the radius and central angle using the arc length formula,

1. Length of an Arc = θ × r, where θ is in radian.
2. Length of an Arc = θ × (π/180) × r, where θ is in degree.

Is the radii the radius of a circle?

The inradius of a geometric figure is usually the radius of the largest circle or sphere contained in it. The inner radius of a ring, tube or other hollow object is the radius of its cavity. For regular polygons, the radius is the same as its circumradius.

How to use the arc of a circle calculator?

The Arc of a Circle Calculator can also be used to: 1 Find out the radius of a circle, knowing only the diameter. 2 Estimate the diameter of a circle when its radius is known. 3 Find the length of an arc, using the chord length and arc angle. 4 Compute the arc angle by inserting the values of the arc length and radius.

How do you find the area of a circle with R2?

It depends on how you define r. If r is the length of the arc on the sphere, then your area is still πr2. If r is the radius in the plane, you need to calculate the length of the arc given by a point on the circle, and the intersection between the sphere and the line that goes through the center of the sphere and the center of the circle.

How to find radius of an arc or segment?

Radius of an arc or segment 1 To calculate the radius. H is the height measured at the midpoint of the arc’s base. 2 Calculator. Enter any two values and press ‘Calculate’. 3 Finding the arc width and height. The width, height and radius of an arc are all inter-related. 4 Using a compass and straightedge.

How do you find the radius of a circle through points?

A circle through any three points can also be found by construction with a compass and straightedge. This also yields the location of the center point, and hence its radius. In the applet at the top of the page, the three orange dots could be used in this method.