# regular polygon area   55 videos

• #### Surface Area of Prisms

##### GeometryArea

How to calculate the surface area of any prism.

prism 3d bases lateral faces lateral area surface area
• #### Area of a Sector

##### GeometryArea

How to derive the formula to calculate the area of a sector in a circle.

sector central angle intercepted arc circle radius area
• #### Solving Formulas

##### GeometryArea

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.

formulas isolating a variable rectangle area triangle area trapezoid area regular polygon area
• #### Multiplying Polynomials using Area Models

##### AlgebraPolynomials

How to relate area of rectangles to multiplying polynomials.

area binomial trinomial distributing
• #### Surface Area of Joined Solids

##### GeometryArea

How to calculate the surface area of a cylinder joined to a cone.

joined solid cone cylinder lateral area circle
• #### Using Sine to Calculate the Area of a Triangle

##### GeometryBasic Trigonometry

How to calculate the area of any triangle using two sides and an included angle.

area of a triangle sine
• #### Using Sine to Calculate the Area of a Triangle

##### TrigonometryBasic Trigonometry

How to calculate the area of any triangle using two sides and an included angle.

area of a triangle sine
• #### Using Sine to Calculate the Area of a Triangle

##### PrecalculusBasic Trigonometry

How to calculate the area of any triangle using two sides and an included angle.

area of a triangle sine
• #### Volume of Pyramids

##### GeometryVolume

How to find the volume of any pyramid.

volume base area height pyramid regular polygon
• #### Area of Trapezoids

##### GeometryArea

How to derive the area of a trapezoid formula using the area of a rectangle.

trapezoid parallelogram base height
• #### Area of an Annulus

##### GeometryArea

How to derive the formula for the area of an annulus.

• #### Approximating Area Using Rectangles

##### CalculusThe Definite Integral

How to approximate the area under a curve using rectangles.

approximating area under a curve left hand sums right hand sums limits
• #### Area of Kites and Rhombuses

##### GeometryArea

How to derive the area formula of a kite based on the rectangle formula; how to calculate the area of a rectangle using diagonal lengths.

kite area diagonals consecutive sides vertex angle non vertex angle bisect perpendicular rhombus
• #### Area and Perimeter of Circles

##### Pre-AlgebraIntroductory Geometry

Vocabulary and formulas for the area of a circle

• #### Area With the Cross Product

##### PrecalculusSystems of Linear Equations and Matrices

How to show that the magnitude of the cross product of two vectors gives the area of the parallelogram determined by those two vectors.

cross product magnitude of vectors dot product angle between vectors area parallelogram
• #### Volume of Prisms

##### GeometryVolume

How to find the volume of any prism, right or oblique using a general formula.

volume base area height trapezoid regular polygon oblique prism
• #### Area and Perimeter of Rectangles

##### Pre-AlgebraIntroductory Geometry

Overview of area and perimeter formulas for parallelograms and rectangles

• #### Volume and Surface Area

##### Pre-AlgebraIntroductory Geometry

Vocabulary and formulas for surface area and volume of common solids

• #### Area Between Curves

##### AP Calculus ABAP Calculus Videos
Area between two curves area between intersecting curves curves that intersect at more than one point
• #### Area and Perimeter of Triangles

##### Pre-AlgebraIntroductory Geometry

Understanding why the area of a triangle is 1/2 base times height