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Perimeter and Area

Multiplication Tables: the product of two numbers can be represented by the area of a rectangle where the factors are represented as the dimensions of the rectangle. Notice each square in the area grid is a unit square.

 

Area of a rectangle is represented by a grid of unit squares. Perimeter is the distance around the outside rectangle.

 

Enrichment: Area of a square is represented by a grid of unit squares. Perimeter is the distance around the outside square.

 

Area of a parallelogram is represented by a grid of unit squares. Perimeter is the distance around outside of the parallelogram.

 

Enrichment: Area of a rhombus is represented by a grid of unit squares. Perimeter is the distance around outside of the rhombus.

 

Area of Triangles is represented by a grid of unit squares. Perimeter is the distance around outside of the triangle.

 

Enrichment: Area of Trapezoids is represented by a grid of unit squares. Perimeter is the distance around outside of the trapezoid.

 

Area of Circles is represented by a grid of unit squares. Circumference is the distance around outside of the circle.

r = radius of circle, d = diameter of circle. Notice 2r = d

 

Comments to:  Jim Reed
Started September, 1998. Copyright © 2006, 2007, 2008