Area and Methods of Polygons

The video tutorial covers module 13, focusing on lesson 13.4 about finding the area of polygons. It explains how to break polygons into simpler shapes, such as tangrams, to calculate their areas. The tutorial demonstrates using known formulas to find areas of rectangles, triangles, and trapezoids. It also includes solving real-world problems and practical applications of these calculations.

What is the primary method discussed for finding the area of polygons?

• Breaking them into simpler shapes

• Measuring with a ruler

• Using a calculator

• Guessing the area

If two large triangles are placed on top of each other, what can be said about their areas?

• One is larger than the other

• They have different areas

• They form a new shape

• They have the same area

How can you find the area of a rectangle?

• By adding all sides

• By multiplying base and height

• By dividing it into triangles

• By using a protractor

What is the area of a triangle with a base of 8 cm and a height of 6 cm?

• 36 square cm

• 12 square cm

• 48 square cm

• 24 square cm

How many bags of mulch are needed to cover a garden of 351 square feet if each bag covers 12 square feet?

• 29 bags

• 28 bags

• 31 bags

• 30 bags

What is the cost to carpet a lobby with an area of 1116 square feet if the carpet costs $3 per square foot?

• $3200

• $3348

• $3000

• $3500

What is the area of a square with a side length of 8 units?

• 64 square units

• 32 square units

• 16 square units

• 48 square units

If a parallelogram is divided into two identical trapezoids, what is the area of one trapezoid if the parallelogram's area is 40 square units?

• 30 square units

• 10 square units

• 20 square units

• 40 square units

What is the area of a triangle with a base of 4 and a height of 7?

• 14 square units

• 28 square units

• 21 square units

• 10 square units

How can you find the area of a complex polygon?

• By using a single formula

• By breaking it into known shapes

• By measuring each side

• By estimating visually