• #### Area of Circles - Concept

##### Math›Geometry›Area
How to derive the formula to calculate the area of a circle.
• #### Area of Circles - Problem 2

##### Math›Geometry›Area
How to find the circumference of a circle if the area is given.
• #### Area of Circles - Problem 1

##### Math›Geometry›Area
How to calculate the area of a circle if a diameter is given.
• #### 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 and Perimeter of Circles - Concept

##### Math›Pre-Algebra›Introductory Geometry
Vocabulary and formulas for the area of a circle
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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 Circles - Problem 2

##### Math›Pre-Algebra›Introductory Geometry
Area of composite shape involving circles in a real life problem
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• #### Regions Between Circles and Squares - Concept

##### Math›Geometry›Area
How to calculate the area between a square and an inscribed circle.
• #### Area of a Sector - Concept

##### Math›Geometry›Area
How to derive the formula to calculate the area of a sector in a circle.
• #### Regions Between Circles and Squares - Problem 1

##### Math›Geometry›Area
How to calculate the area of a region formed by four circles inside a square.
• #### Area of a Sector - Problem 2

##### Math›Geometry›Area
How to find the radius of a circle when the area and arc measure are given.
• #### Regions Between Circles and Squares - Problem 2

##### Math›Geometry›Area
How to calculate the area of a region formed by four quarter circles inside a square.
• #### Area of an Annulus - Problem 3

##### Math›Geometry›Area
How to find the distance between two circles given the area of the annulus and the radius of the smaller circle.
• #### Area of an Annulus - Problem 2

##### Math›Geometry›Area
How to calculate the area between two circles, given the radius of the smaller circle and the distance between the circles.
• #### Area of an Annulus - Problem 1

##### Math›Geometry›Area
How to calculate the area between two circles, given the radius of the smaller circle and the distance between the circles.
• #### Surface Area of Joined Solids - Concept

##### Math›Geometry›Area
How to calculate the surface area of a cylinder joined to a cone.
• #### Surface Area of Joined Solids - Problem 2

##### Math›Geometry›Area
How to calculate the surface area of a rectangular prism with half of a cylinder on top.
• #### Surface Area of Joined Solids - Problem 1

##### Math›Geometry›Area
How to calculate the surface area of a cylinder joined to a cone.
• #### Surface Area of Cylinders - Concept

##### Math›Geometry›Area
How to prove the surface area of a cylinder formula.
• #### Surface Area of Cylinders - Problem 1

##### Math›Geometry›Area
How to calculate the surface area of a cylinder.