WEEK 6

Intro to geometry  

 http://www.mathsisfun.com/geometry/plane-geometry.html

Area of a Rectangle

The Area is the width times the height: Area = w × h

Example: A rectangle is 6 m wide and 3 m high, what is its Area?

Area = 6 m × 3 m = 18 m²

Perimeter of a Rectangle

The Perimeter is the distance around the edges.

The Perimeter is 2 times the (width + height): Perimeter = 2(w+h)

Example: A rectangle has a width of 12 cm, and a height of 5 cm, what is its Perimeter?

Perimeter = 2 × (12 cm + 5 cm) = 2 × 17 cm = 34 cm
Radius, Diameter and Circumference

The Radius is the distance from the center to the edge.
The Diameter starts at one side of the circle, goes through the center and ends on the other side.
The Circumference is the distance around the edge of the circle.