Understanding Area Calculations

The video tutorial explains how to find the area of a blue shaded region within a square. Each side of the square is 4 cm, and the task is to subtract the area of four sectors from the square's area. The sectors are parts of a circle with a radius of 2 cm. The tutorial walks through calculating the square's area, determining the area of the sectors, and then subtracting to find the blue region's area. The final result is approximately 3.43 square centimeters.

What is the length of each side of the square?

• 5 centimeters

• 4 centimeters

• 3 centimeters

• 2 centimeters

How do you find the area of the blue shaded region?

• Subtract the area of the sectors from the area of the square

• Add the area of the square and the sectors

• Multiply the area of the square by the area of the sectors

• Divide the area of the square by the area of the sectors

What is the radius of the circle used to calculate the area of each sector?

• 4 centimeters

• 3 centimeters

• 2 centimeters

• 1 centimeter

How many sectors make up the black area?

• Five

• Four

• Three

• Two

What is the formula for the area of the blue shaded region?

• S squared plus pi r squared

• S squared minus pi r squared

• S squared times pi r squared

• S squared divided by pi r squared

What is the approximate area of the blue shaded region in square centimeters?

• 5.43

• 4.43

• 3.43

• 2.43