• #### The Circle - Problem 4

##### Math›Precalculus›Conic Sections
How to use two endpoints of a diameter to create the equation for a circle.
• #### Equation of a Circle - Problem 1

##### Math›Trigonometry›Pythagorean Theorem
How to write the equation of a circle given the center and a point on the circle.
• #### The Circle - Concept

##### Math›Precalculus›Conic Sections
How to use the distance formula to derive the equation for a circle.
• #### Equation of a Circle - Problem 3

##### Math›Trigonometry›Pythagorean Theorem
How to write the equation of a circle given the center and a point on the circle.
• #### The Circle - Concept

##### Math›Algebra 2›Conic Sections
How to use the distance formula to derive the equation for a circle.
• #### The Circle - Problem 4

##### Math›Algebra 2›Conic Sections
How to use two endpoints of a diameter to create the equation for a circle.
• #### Equation of a Circle - Problem 3

##### Math›Geometry›Pythagorean Theorem
How to write the equation of a circle given the center and a point on the circle.
• #### Equation of a Circle - Problem 1

##### Math›Geometry›Pythagorean Theorem
How to write the equation of a circle given the center and a point on the circle.
• #### Surface Area of Spheres - Problem 2

##### Math›Geometry›Volume
How to calculate the surface area of a sphere given the volume.
• #### Area of Circles - Problem 3

##### Math›Geometry›Area
How to calculate the area in a problem where a rope or leash is tied to an object.
• #### Area of a Segment - Problem 2

##### Math›Geometry›Area
How to find the area of a segment, given a side in an equilateral triangle.
• #### Solving Formulas - Problem 2

##### Math›Geometry›Area
How to solve the area of a sector formula for the radius.
• #### Area of a Segment - Problem 1

##### Math›Geometry›Area
How to find the area of a segment, given a leg in a right triangle.
• #### Arc Length - Concept

##### Math›Geometry›Circles
How to define arc length and how it is different from arc measure; how to calculate the length of an arc.
• #### Radii to Tangents - Problem 1

##### Math›Geometry›Circles
How to calculate the central angle formed by radii to tangents that intersect at a point outside the circle.
• #### Area of a Sector - Problem 3

##### Math›Geometry›Area
How to find the area of a sector given the arc measure and the length of the intercepted chord.
• #### Arc Length - Problem 3

##### Math›Geometry›Circles
How to find the arc length formed by an inscribed angle given the diameter.
• #### Surface Area of Spheres - Problem 1

##### Math›Geometry›Volume
How to calculate the surface area of a hemisphere.
• #### The Circle - Concept

##### Math›Precalculus›Equations of Lines, Parabolas and Circles
How to use the distance formula to derive the equation for a circle.
• #### Radian Measure of Angles - Problem 1

##### Math›Precalculus›Trigonometric Functions
How to measure a central angle of a circle when the radius and the length of the intercepted arc are given.