Calculating Areas of Geometric Shapes

The video tutorial covers the topic of composite figures, focusing on calculating areas of various shapes. It begins with an introduction to composite figures and proceeds with three examples. Example one involves finding the area using grid paper, example two calculates the area of a basketball court using a rectangle and semicircle, and example three involves a triangle, rectangle, and parallelogram. The tutorial concludes with practice problems and an exit ticket for students to apply their learning.

What is a composite figure?

• A figure with no defined area

• A figure composed of different shapes put together

• A figure made of only one shape

• A figure that cannot be measured

How do you calculate the area of a rectangle?

• Subtract the width from the length

• Add the length and width

• Divide the length by the width

• Multiply the length by the width

When counting triangles on grid paper, how should they be considered?

• As full units

• As double units

• As half units

• As zero units

What is the total area of the yellow figure in the example?

• 45 square units

• 47.5 square units

• 50 square units

• 42 square units

What should you remember when finding the area of shaded figures?

• Only count full squares

• Ignore partial triangles

• Break it up into full squares and partial triangles

• Count only the perimeter

What is the first step in finding the area of the basketball court section?

• Find the area of the rectangle

• Ignore the rectangle

• Find the area of the semicircle

• Count the shaded part twice

How do you find the area of a semicircle?

• Multiply the radius by 3.14

• Multiply the diameter squared by 3.14

• Multiply the radius squared by 3.14 and divide by 2

• Multiply the diameter by 3.14

What is the total area of the basketball court section?

• 228 square ft

• 28452 square ft

• 5652 square ft

• 2028 square ft

How many semicircles make a full circle?

• One

• Two

• Three

• Four

What is the formula for the area of a triangle?

• Base times height

• Base times height divided by two

• Base minus height

• Base plus height