Finding the Area of Composite Figures

The video tutorial reviews area formulas for basic shapes like squares, rectangles, triangles, trapezoids, and circles. It emphasizes the importance of using perpendicular height in calculations. The tutorial also provides a step-by-step guide to finding the area of composite figures, followed by examples and practice problems to reinforce learning.

What is the formula for the area of a triangle?

• Base times height

• Base divided by height

• 1/2 base times height

• Base plus height

Which shape's area is calculated using the formula pi r squared?

• Rectangle

• Square

• Triangle

• Circle

What is the first step in finding the area of a composite figure?

• Find the perimeter

• Identify the types of figures

• Calculate the area of each shape

• Add all areas together

Why is it important to label your work when calculating area?

• To avoid losing points

• To make it look neat

• To impress the teacher

• To use less paper

In the example with semicircles and a rectangle, what is the diameter of the semicircles?

• 25 yards

• 20 yards

• 15 yards

• 10 yards

How do you calculate the area of three-fourths of a circle?

• pi r squared

• 1/2 times pi r squared

• 3 times pi r squared

• 3/4 times pi r squared

What is the radius of the circle in the square and three-fourths circle example?

• 1.5

• 1

• 2.5

• 2

In the semicircle and trapezoid example, what is the height of the trapezoid?

• 16

• 14

• 12

• 10

What is the total area of the heart-shaped figure?

• 18.065 square inches

• 16.065 square inches

• 14.065 square inches

• 12.065 square inches

Which two shapes form the heart-shaped figure?

• Two semicircles and a square

• Two semicircles and a rectangle

• A circle and a square

• A semicircle and a trapezoid