In this unit you will learn about:
Video 1: How to calculate the area and circumference of circles and semi-circles
Video 2: Examples pertaining to calculating the area and circumference of circles and semi-circles
Video 3: Common mistakes made when calculating the area and circumference of circles and semi-circles
Note: After watching each video, click on the 'back button' to return to the VLE
Video 1: How to calculate the area of a parallelogram
Video 2: Examples relating to calculating the area of a parallelogram
Video 3: Common mistakes made when calculating the area of a parallelogram
Note: After watching each video, click on the 'back button' to return to the VLE
Video 1: Area of a rectangle
Video 2: Examples pertaining to areas of rectangles
Video 1: How to calculate the area of a trapezium
Video 2: Examples pertaining to calculating the area of a trapezium
Video 3: Common mistakes made when calculating the area of a trapezium
Note: Click on the 'back button' after watching each video, in order to return to the VLE
Video 1: Area of a triangle
Video 2: Examples pertaining to the area of triangles
Video 3: Common mistakes made when calculating the area of a triangle
Note: Click on the 'back button' to return to the VLE after watching each video
There are many different processes and phenomena that emit electromagnetic radiation. Humans have taken advantage of many of these processes to develop technologies that use electromagnetic radiation.
This video explains how to calculate the perimeter of various 2D shapes.
The beauty of a coral reef, the warm radiance of sunshine, the sting of sunburn, the X-ray revealing a broken bone, even microwave popcorn—all are brought to us by electromagnetic waves. The list of the various types of electromagnetic waves, ranging from radio transmission waves to nuclear gamma-ray (γ-ray) emissions, is interesting in itself.
Even more intriguing is that all of these different phenomena are manifestations of the same thing—electromagnetic waves (see Figure 15.1). What are electromagnetic waves? How are they created, and how do they travel? How can we understand their widely varying properties? What is the relationship between electric and magnetic effects? These and other questions will be explored.