Calculating Areas of Shapes

The video tutorial covers solving problems related to irregular polygons and trapezoids. It begins with finding missing sides of an irregular polygon, followed by calculating its area using different methods. The tutorial then explores alternative methods for area calculation and concludes with determining the area of a trapezoid by breaking it into triangles.

What is the length of side DC if AB is 20 units and part of it is 12 units?

• 8 units

• 12 units

• 20 units

• 32 units

How do you calculate the length of side BC if the vertical sides are 12 and 9 units?

• Divide them

• Add them together

• Subtract them

• Multiply them

What is the area of a rectangle with dimensions 20 by 9 units?

• 180 units squared

• 200 units squared

• 190 units squared

• 160 units squared

If you divide an irregular polygon into two rectangles, what should you do to find the total area?

• Divide the areas of the rectangles

• Subtract the areas of the rectangles

• Add the areas of the rectangles

• Multiply the areas of the rectangles

What is the area of a rectangle with dimensions 8 by 12 units?

• 104 units squared

• 88 units squared

• 100 units squared

• 96 units squared

What is the formula for the area of a triangle?

• Perimeter divided by 2

• Length times width

• Base times height

• 1/2 base times height

How do you calculate the area of a large triangle with a base of 22 units and height of 18 units?

• 198 meters squared

• 200 meters squared

• 220 meters squared

• 180 meters squared

What is the area of a small triangle with a base of 3 units and height of 18 units?

• 21 meters squared

• 24 meters squared

• 30 meters squared

• 27 meters squared

What is the total area of the trapezoid if the large triangle is 198 meters squared and the small triangle is 27 meters squared?

• 230 meters squared

• 200 meters squared

• 250 meters squared

• 225 meters squared

What is the height used for calculating the area of the small triangle?

• 22 units

• 12 units

• 18 units

• 9 units