Master Finding the area and circumference of a circle and shaded regions

The video tutorial explains how to calculate the area and circumference of circles and related figures. It covers the use of radius and diameter in these calculations, including examples with whole circles, shaded regions, and semi-circles. The instructor emphasizes leaving π in the answer for precision and demonstrates step-by-step calculations for each scenario.

How do you find the area of a shaded region formed by two circles?

What is the area of a semi-circle with a radius of 4 millimeters?

Explain how to calculate the circumference of a semi-circle.