• #### Approximating Area Using Rectangles - Problem 1

##### Math›Calculus›The Definite Integral
How to estimate the area between a curve and the x-axis with left- and right-hand sums.
• #### Volume and Surface Area - Problem 3

##### Math›Pre-Algebra›Introductory Geometry
Volume and surface area of pyramids
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• #### Surface Area of Spheres - Problem 3

##### Math›Geometry›Volume
How to calculate the radius of a sphere given a radius.
• #### Approximating Area Using Rectangles - Problem 2

##### Math›Calculus›The Definite Integral
How to estimate the area under a curve, f = x^2 +1, with left- and right-hand sums.
• #### Area and Perimeter of Triangles - Problem 3

##### Math›Pre-Algebra›Introductory Geometry
Finding the area and perimeter of triangles with variables in the side lengths
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• #### Volume and Surface Area - Problem 2

##### Math›Pre-Algebra›Introductory Geometry
Surface area and volume of prisms
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• #### Area and Perimeter of Circles - Problem 2

##### Math›Pre-Algebra›Introductory Geometry
Area of composite shape involving circles in a real life problem
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• #### Area and Perimeter of Circles - Problem 1

##### Math›Pre-Algebra›Introductory Geometry
Exact and decimal approximations for the area and circumference of circles
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• #### Area and Perimeter of Triangles - Problem 1

##### Math›Pre-Algebra›Introductory Geometry
Finding the area and perimeter of a triangle
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• #### Volume and Surface Area - Problem 1

##### Math›Pre-Algebra›Introductory Geometry
Volume and surface area of cones, spheres, and cylinders
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• #### Area With the Cross Product - Problem 2

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to compute the area of a triangle in the xy-plane using vectors formed from two of its sides.
• #### Area With the Cross Product - Problem 3

##### Math›Precalculus›Systems of Linear Equations and Matrices
How to compute the area of a triangle in xyz-space using vectors formed from two of its sides.
• #### Area and Perimeter of Rectangles - Problem 3

##### Math›Pre-Algebra›Introductory Geometry
Finding area and perimeter of parallelograms with variables in side lengths
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• #### Area and Perimeter of Rectangles - Problem 1

##### Math›Pre-Algebra›Introductory Geometry
Finding the area and perimeter of parallelograms with integer side lengths
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• #### Area and Perimeter of Rectangles - Problem 2

##### Math›Pre-Algebra›Introductory Geometry
Finding decimal approximations and exact areas and perimeters for parallelograms with square root side lengths
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• #### Area and Perimeter of Triangles - Problem 2

##### Math›Pre-Algebra›Introductory Geometry
Finding the area and perimeter of composite shapes that contain triangles
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• #### Multiplying Polynomials using Area Models - Problem 4

##### Math›Algebra›Polynomials
An area, or geometric model for multiplying polynomials is explored through a "rectangle" or "box" method of organizing terms.
• #### Area and Perimeter of Rectangles - Problem 4

##### Math›Pre-Algebra›Introductory Geometry
Finding possible dimensions for a rectangular fence with known perimeter
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• #### 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.