• #### Area of Parallelograms - Problem 2

##### Math›Geometry›Area
How to find the base length of a parallelogram given the area.
• #### Area of Trapezoids - Problem 1

##### Math›Geometry›Area
How to find the length of a base in a triangle where the area, other base, and height are known.
• #### Area of Parallelograms - Problem 3

##### Math›Geometry›Area
How to find the height of a parallelogram given two base lengths and a different height.
• #### Area of Trapezoids - Problem 3

##### Math›Geometry›Area
How to find the area of a trapezoid where the base lengths, one side, and two angles are given.
• #### Area of Parallelograms - Concept

##### Math›Geometry›Area
How to find the area of any parallelogram using rectangle area formulas.
• #### Area of Parallelograms - Problem 4

##### Math›Geometry›Area
How to find the area of a rectangle, given the perimeter and one side.
• #### Area of Parallelograms - Problem 1

##### Math›Geometry›Area
How to calculate the area of a parallelogram, given the lengths of the sides and a height.
• #### Area of Triangles - Problem 2

##### Math›Geometry›Area
How to find an unknown variable, x, when the area is given and the base and height of a triangle is given in terms of x.
• #### Surface Area of Prisms - Problem 2

##### Math›Geometry›Area
How to calculate the surface area of a triangular prism.
• #### Surface Area of Prisms - Concept

##### Math›Geometry›Area
How to calculate the surface area of any prism.
• #### Surface Area of Prisms - Problem 1

##### Math›Geometry›Area
How to calculate the surface area of a rectangular prism.
• #### Surface Area of Pyramids - Concept

##### Math›Geometry›Area
How to calculate the surface area of any pyramid, emphasizing regular polygons as bases.
• #### Area of Trapezoids - Concept

##### Math›Geometry›Area
How to derive the area of a trapezoid formula using the area of a rectangle.
• #### Area of Trapezoids - Problem 2

##### Math›Geometry›Area
How to find the area of a trapezoid given the lengths of the four sides and the height of the trapezoid.
• #### Area and Perimeter of Triangles - Concept

##### Math›Pre-Algebra›Introductory Geometry
Understanding why the area of a triangle is 1/2 base times height
Tags:
• #### 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.
• #### Solving Formulas - Problem 1

##### Math›Geometry›Area
How to solve for one of the bases of a trapezoid in the trapezoid area formula.
• #### Volume of Pyramids - Problem 4

##### Math›Geometry›Volume
How to find the base of a trapezoid in a pyramid, given the volume.
• #### Volume of Pyramids - Problem 1

##### Math›Geometry›Volume
How to find the volume of a square pyramid given the base side length and slant height.
• #### Volume of Cylinders - Concept

##### Math›Geometry›Volume
How to calculate the volume of any cylinder.