What is the diameter of a perfect sphere?
Diameter of a sphere: d = 2 * r , Surface area of a sphere: A = 4 * π * r² , Volume of a sphere: V = 4/3 * π * r³ , Surface to volume ratio of a sphere: A / V = 3 / r .
What is the radius of sphere?
Use the formula r = √(A/(4π)). The surface area of a sphere is derived from the equation A = 4πr2. Solving for the r variable yields √(A/(4π)) = r, meaning that the radius of a sphere is equal to the square root of the surface area divided by 4π.
How much of a sphere can you see?
Using this equation, if the earth were perfectly spherical, then a person standing on earth’s surface can see about 0.000016\% of the earth’s surface, or about 82 square kilometers (32 square miles). This corresponds to a circle of visibility with a radius of about 5 km (3 miles).
How do you find the circumference of a sphere with volume?
Calculating the Circumference of a Sphere Using Volume. If you know the volume of a sphere, you can calculate the circumference based on the following formula: C = ϖ 2 / 3 (6 V) 1 / 3. where.
What is the difference between a 1-sphere and a 2-spheres?
In particular: 1 S0: a 0-sphere is a pair of endpoints of an interval [−r, r] of the real line 2 S1: a 1-sphere is a circle of radius r 3 S2: a 2-sphere is an ordinary sphere 4 S3: a 3-sphere is a sphere in 4-dimensional Euclidean space. More
What is the difference between circumference and diameter?
“Circumference” – If you a cut a sphere in half, the circumference would be the distance around the outside edge of the cut surface. “Diameter” – The distance of a straight line that extends from any point on the surface of the sphere to the surface point directly opposite, while passing through the center of the sphere.
How to compute the mass or weight of a sphere?
Compute the Mass or Weight of a Sphere based on its volume and mean density, CLICK HERE. This calculator replaces the radius with C/ (2 π), based on the formula for the circumference of a circle c = 2 π r.