# Review perimeter and area

## Presentation on theme: "Review perimeter and area"— Presentation transcript:

Review perimeter and area
Quiz

Objectives (checks) Understand, select and use units of appropriate size and type to measure angles, lengths/distances, area, surface area and volume. Solve contextual problems that require calculating the area of triangles and parallelograms. Prepares for: Decompose irregular shapes to find perimeter and area.

Remember!!! Perimeter - all sides added together
Area of square and rectangles - A = length x width - A = l x w

Remember!!! Area of parallelograms - A = base x height - A = b x h
Area of triangles - A = ½ x b x h

1. Find the perimeter of a rectangle that is 15 cm wide and 44 cm long.
118 square cm 118 cm 660 cm 660 square cm 44 cm

1. Find the perimeter of a rectangle that is 15 cm wide and 44 cm long.
118 square cm 118 cm 660 cm 660 square cm 44 cm

2. Which is the best unit of measurement for measuring the length of a playground?
A. Meter B. Millimeter C. Centimeter D. Inches

2. Which is the best unit of measurement for measuring the length of a playground?
A. Meter B. Millimeter C. Centimeter D. Inches

10 feet by 40 feet 15 feet by 35 feet 20 feet by 25 feet
3. Mrs. Tulip wants to plant a garden with the greatest area. She wants it to have a perimeter of 100 feet. Which dimensions should she use? 10 feet by 40 feet 15 feet by 35 feet 20 feet by 25 feet 25 feet by 25 feet

10 feet by 40 feet 15 feet by 35 feet 20 feet by 25 feet
3. Mrs. Tulip wants to plant a garden with the greatest area. She wants it to have a perimeter of 100 feet. Which dimensions should she use? 10 feet by 40 feet 15 feet by 35 feet 20 feet by 25 feet 25 feet by 25 feet

4. Find the area of a rectangle that is 26 ft wide and 26 ft long.

4. Find the area of a rectangle that is 26 ft wide and 26 ft long.

2 5. The area of the rectangle is 42 yd . Which of the following can be used to find the area of the shaded triangle? ½ x 42 42 42 – 7 42 (2 x 7)

2 5. The area of the rectangle is 42 yd . Which of the following can be used to find the area of the shaded triangle? ½ x 42 42 42 – 7 42 (2 x 7)

20.5 inches 38 inches 41 inches 44 inches
6. Hunter is running for class president. He is painting a border on each of his election posters. If the posters are 9.5 inches wide and 11 inches tall, what is the perimeter of the posters? 20.5 inches 38 inches 41 inches 44 inches

20.5 inches 38 inches 41 inches 44 inches
6. Hunter is running for class president. He is painting a border on each of his election posters. If the posters are 9.5 inches wide and 11 inches tall, what is the perimeter of the posters? 20.5 inches 38 inches 41 inches 44 inches

A = (2 x 6) + (2 x 8) A = 8 x 6 A = ½ x 8 x 6 A = 8 + 6
7. Which of the following can be used to find the area in square centimeters of a parallelogram whose base measure 6 centimeters and height measures 8 centimeters? A = (2 x 6) + (2 x 8) A = 8 x 6 A = ½ x 8 x 6 A = 8 + 6 8 cm 6 cm

A = (2 x 6) + (2 x 8) A = 8 x 6 A = ½ x 8 x 6 A = 8 + 6
7. Which of the following can be used to find the area in square centimeters of a parallelogram whose base measure 6 centimeters and height measures 8 centimeters? A = (2 x 6) + (2 x 8) A = 8 x 6 A = ½ x 8 x 6 A = 8 + 6 8 cm 6 cm

8. To the nearest ¼ inch, how long is the key?
2 ¼ 2 ¾ in

8. To the nearest ¼ inch, how long is the key?
2 ¼ 2 ¾ in

9. A rectangular bulletin board is 8 ft long and 4 ft high. Mrs
9. A rectangular bulletin board is 8 ft long and 4 ft high. Mrs. Jones wants to cover it in shiny fabric to display artwork. Which of the following can be used to find how many square feet of fabric she needs? A = 4 x 4 A = 8 x 8 A = 8 x 4 A=2 x x 4

9. A rectangular bulletin board is 8 ft long and 4 ft high. Mrs
9. A rectangular bulletin board is 8 ft long and 4 ft high. Mrs. Jones wants to cover it in shiny fabric to display artwork. Which of the following can be used to find how many square feet of fabric she needs? A = 4 x 4 A = 8 x 8 A = 8 x 4 A=2 x x 4

10. Which line segment measures about 4 ¼ inches long?
D

10. Which line segment measures about 4 ¼ inches long?
D