104 Videos for "radius"

Surface Area of Spheres  Problem 3
Math › Geometry › Volume
How to calculate the radius of a sphere given a radius. 
The Midpoint and Distance Formulas in 3D  Problem 4
Math › Precalculus › Vectors and Parametric Equations
How to find the center and radius of a sphere when its equation is not in centerradius form by completing the square. 
Circumference  Problem 2
Math › Geometry › Circles
How to find the radius of a circle given circumference. 
The Circle  Problem 1
Math › Precalculus › Conic Sections
How to find the equation for a circle given the center and radius. 
Circumference  Problem 1
Math › Geometry › Circles
How to calculate the circumference of a circle given diameter or radius. 
Radii to Tangents  Concept
Math › Geometry › Circles
How to define a tangent line; how to determine the angle a radius to a tangent forms. 
The Circle  Problem 1
Math › Algebra 2 › Conic Sections
How to find the equation for a circle given the center and radius. 
Surface Area of Spheres  Concept
Math › Geometry › Volume
How to calculate the surface area of a sphere given a radius. 
The Circle  Problem 3
Math › Precalculus › Conic Sections
How to find the center and radius of a circle by completing the square. 
The Circle  Problem 3
Math › Algebra 2 › Conic Sections
How to find the center and radius of a circle by completing the square. 
Area of an Annulus  Problem 3
Math › Geometry › Area
How to find the distance between two circles given the area of the annulus and the radius of the smaller circle. 
Arc Length  Problem 1
Math › Geometry › Circles
How to find the length of an arc given a radius and arc length. 
The Circle  Problem 3
Math › Precalculus › Equations of Lines, Parabolas and Circles
How to find the center and radius of a circle by completing the square. 
Area of a Sector  Problem 1
Math › Geometry › Area
How to find the area of a sector when the radius and arc measure are given. 
Area of an Annulus  Problem 1
Math › Geometry › Area
How to calculate the area between two circles, given the radius of the smaller circle and the distance between the circles. 
The Circle  Problem 1
Math › Precalculus › Equations of Lines, Parabolas and Circles
How to find the equation for a circle given the center and radius. 
The Circle  Problem 2
Math › Precalculus › Conic Sections
How to find the center and radius of a circle given an equation. 
Equation of a Circle  Problem 2
Math › Trigonometry › Pythagorean Theorem
How to identify the center and radius of a circle given an equation. 
Arc Length  Problem 2
Math › Geometry › Circles
How to find the radius of a circle given arc length and arc measure. 
Area of an Annulus  Problem 2
Math › Geometry › Area
How to calculate the area between two circles, given the radius of the smaller circle and the distance between the circles.