Calculating Perimeter of Rectangles

The video tutorial covers the calculation of the perimeter of rectangles. It begins with a review of previous lessons on the perimeter of triangles and quadrilaterals, then introduces the formula for calculating the perimeter of a rectangle. The tutorial provides examples, including converting units and solving real-life problems, such as calculating the length of a fence around a garden. The lesson concludes with a summary and practice exercises to reinforce the concepts learned.

What is the perimeter of a rectangle with a length of 4 cm and a width of 3 cm?

• 12 cm

• 14 cm

• 18 cm

• 16 cm

How can the sum 3 + 4 + 3 + 4 be simplified to find the perimeter of a rectangle?

• (3 + 4) * 4

• (3 + 4) * 3

• (3 + 4) * 1

• (3 + 4) * 2

What is the formula for calculating the perimeter of a rectangle?

• Length + Width

• Length * Width

• 2 * (Length + Width)

• 2 * Length + Width

If a rectangle has a length of 5 meters and a width of 2 meters, what is its perimeter?

• 12 meters

• 16 meters

• 14 meters

• 10 meters

What must be true about the units of length and width when calculating the perimeter of a rectangle?

• They must be in different units

• They must be in the same unit

• Units do not matter

• One must be in meters and the other in centimeters

How do you calculate the perimeter of a rectangle if the width is 3 meters and the length is 7 meters?

• (3 + 7) * 2

• 3 + 7

• (3 + 7) * 3

• 3 * 7

If a rectangle has a length of 10 cm and a width of 5 cm, what is its perimeter?

• 20 cm

• 25 cm

• 35 cm

• 30 cm

A farmer builds a fence around a rectangular garden with a length of 9 meters and a width of 5 meters, leaving a 2-meter gate. What is the length of the fence?

• 28 meters

• 26 meters

• 30 meters

• 24 meters

A basketball court is a rectangle with a length of 28 meters and a width 13 meters shorter than the length. What is the perimeter?

• 70 meters

• 82 meters

• 86 meters

• 90 meters

What is the first step in solving a problem where the width of a rectangle is unknown but the length and the difference between length and width are given?

• Multiply the length by the difference

• Find the width by subtracting the difference from the length

• Add the length and the difference

• Calculate the perimeter directly