Calculating Area and Perimeter

This video tutorial explains the concepts of perimeter and area, detailing how to calculate them for different shapes. It begins with an introduction to perimeter, describing it as the sum of the lengths of a polygon's sides, and provides examples with triangles and rectangles. The tutorial then shifts to the concept of area, explaining it as a measure of surface using square units. It demonstrates how to calculate the area of rectangles and introduces symbolic representation for area calculations. Finally, the video covers the method for calculating the area of triangles by dividing the base times height by two.

What is the perimeter of a polygon?

• The area inside the shape

• The length of the longest side

• The sum of all its sides

• The distance from the center to a vertex

How do you calculate the perimeter of a triangle with sides 3 cm, 4 cm, and 5 cm?

• 3 + 4 = 7 cm

• 3 x 4 = 12 cm

• 3 x 4 x 5 = 60 cm

• 3 + 4 + 5 = 12 cm

What is the perimeter of a rectangle with a base of 5 cm and a height of 2 cm?

• 7 cm

• 14 cm

• 10 cm

• 12 cm

What is the area of a shape?

• The length of its sides

• The space inside the shape

• The volume of the shape

• The distance around the shape

How do you calculate the area of a rectangle?

• Subtract the height from the base

• Divide the base by the height

• Multiply the base by the height

• Add the base and height

How many 1 cm squares fit in a rectangle with a base of 5 cm and a height of 2 cm?

• 10

• 7

• 5

• 12

What is the area of a rectangle with a base of 4 cm and a height of 3 cm?

• 7 cm²

• 12 cm²

• 10 cm²

• 15 cm²

How do you represent the area of a rectangle symbolically?

• A = b x h

• A = b - h

• A = b / h

• A = b + h

How do you calculate the area of a triangle?

• Base x Height

• Base x Height / 2

• Base + Height

• Base - Height

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

• 36 cm²

• 24 cm²

• 12 cm²

• 48 cm²