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Area

Area. AREA. The area of a shape is a measure of the surface/space contained within its perimeter. Remember : The perimeter of a shape is a measure of distance around the outside. 1 cm. 1 cm 2. 1 cm. 1 cm. Units of distance mm cm m km inches feet yards miles. Units of area

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Area

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  1. Area

  2. AREA The area of a shape is a measure of the surface/space contained within itsperimeter. Remember: The perimeter of a shape is a measure of distance around the outside. 1 cm 1 cm2 1 cm 1 cm Units of distance mm cm m km inches feet yards miles Units of area mm2 cm2 m2 km2 inches2 feet2 yards2 miles2 Area is measured in units2 6 cm Metric Metric 3 cm Imperial Imperial 18 cm2 Area = 6 cm x 3 cm = 18 cm2

  3. Area of Rectangle

  4. Examples 10 cm Area = length x width = 10 cm x 6 cm = 60 cm squares 6 cm 7 mm Area = length x width = 7mm x 2mm = 14 mm squares 2 mm

  5. On your white boards 3 m 28 m2 7 m 18 m2 6 m 4 m 5 m 4 m 8 m2 3 m 2 m 15 m2

  6. Page 149 On your note book

  7. Area of Square

  8. Examples 3 1 3 mm 5 m 4 2 7 mm 10 cm Area = S x S = = 7 x 7= 49 mm2 Area = S x S = = 10 x 10 = 100 cm2

  9. On your whiteboard 8 m 4 m 16 m2 64 m2 9 m 6 m 81 m2 36 m2

  10. Page 149 On your note book

  11. Area of rectangle = 60 cm2 , length = 10 cm Find width .. Area of rectangle = 45 cm2 , width = 5 cm Find length.

  12. Area of square = 25cm2 , Find side length Area of square = 81cm2 , Find side length

  13. Complete your worksheet

  14. Area of Triangle

  15. Warm up Find the Area 9 m 5 m 81 m2 25 m2 2 m 7 m 28 m2 6 m 12 m2 4 m

  16. Activity • Draw rectangle with length= 8 cm , width = 10 cm • Find the area of the rectangle • Draw a line between opposite angles ( diagonal ) • Cut the line • What shape you’ve got

  17. Area of a Triangle The area of a triangle = ½ the area of the surrounding rectangle/parallelogram width heigh length base Area of a triangle = ½ base x height

  18. Example Find the area of the following triangles. 9 cm 16 cm 8 cm 14 cm 4 m 2 m

  19. On your whiteboard 20 cm2 21cm2 5 mm 4 m 6 mm 3 m 15 mm2 6 m2

  20. On your note book Page 155

  21. What did we learn today?

  22. Textbook Page 155 Question 3 a , b , c Question 4c

  23. Check Homework

  24. Area of Parallelogram

  25. With your partner • Draw perpendicular line from one angle to the base • Cut the line and add it to the other end • What shape you’ve got

  26. Area of a Parallelogram  height base height base Area = base x height The area of a parallelogram = the area of a rectangle on the same base. Area = base x height

  27. Find the area of each parallelogram below. 1 2 12 cm 5 mm 8mm 8 cm 3 5 m 6 m

  28. On your Whiteboard 78 cm2 63 cm2 9 mm 10cm 50 cm2 36 mm2 4 mm 5 cm

  29. Complete your Worksheet

  30. What did we learn today?

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