• #### Area of Regular Polygons - Concept

##### Math›Geometry›Area
How to derive the formula to calculate the area of a regular polygon.
• #### Area of Regular Polygons - Problem 1

##### Math›Geometry›Area
How to calculate the area of a regular polygon, given the length of the apothem and side length.
• #### Area of Regular Polygons - Problem 3

##### Math›Geometry›Area
How to calculate the perimeter of a regular polygon given the area and apothem length.
• #### Area of Regular Polygons - Problem 2

##### Math›Geometry›Area
How to find the length of an apothem in a regular polygon given the area and side length.
• #### Area of Regular Polygons - Problem 4

##### Math›Geometry›Area
How to find the area of a regular hexagon given only the length of the apothem.
• #### Center and Apothem of Regular Polygons - Concept

##### Math›Geometry›Area
How to define the apothem and center of a polygon; how to divide a regular polygon into congruent triangles.
• #### Center and Apothem of Regular Polygons - Problem 1

##### Math›Geometry›Area
How to find the length of an apothem in a regular polygon given a side length and the number of sides.
• #### Surface Area of Pyramids - Concept

##### Math›Geometry›Area
How to calculate the surface area of any pyramid, emphasizing regular polygons as bases.
• #### Solving Formulas - Problem 3

##### Math›Geometry›Area
How to solve the area of a regular polygon formula for the side length.
• #### Surface Area of Pyramids - Problem 2

##### Math›Geometry›Area
How to calculate the surface area of a regular hexagonal pyramid.
• #### Surface Area of Pyramids - Problem 1

##### Math›Geometry›Area
How to calculate the surface area of a square pyramid, given the side length and height.
• #### Using Sine to Calculate the Area of a Triangle - Problem 2

##### Math›Trigonometry›Basic Trigonometry
How to calculate the area of a regular inscribed polygon given only the radius of a circle.
• #### Using Sine to Calculate the Area of a Triangle - Problem 2

##### Math›Precalculus›Basic Trigonometry
How to calculate the area of a regular inscribed polygon given only the radius of a circle.
• #### Using Sine to Calculate the Area of a Triangle - Problem 2

##### Math›Geometry›Basic Trigonometry
How to calculate the area of a regular inscribed polygon given only the radius of a circle.
• #### Solving Formulas - Problem 1

##### Math›Geometry›Area
How to solve for one of the bases of a trapezoid in the trapezoid area formula.
• #### Solving Formulas - Problem 2

##### Math›Geometry›Area
How to solve the area of a sector formula for the radius.
• #### Solving Formulas - Concept

##### Math›Geometry›Area
How to strategize about solving formulas for variables; how to solve the area of a rectangle formula for base and height; how to solve the area of a triangle formula for base and for height.
• #### Volume of Pyramids - Concept

##### Math›Geometry›Volume
How to find the volume of any pyramid.
• #### Volume of Prisms - Problem 1

##### Math›Geometry›Volume
How to calculate the volume of a trapezoidal prism.
• #### Volume of Prisms - Concept

##### Math›Geometry›Volume
How to find the volume of any prism, right or oblique using a general formula.