copyright@ed2netlearning,inc1 areas grade 3. copyright@ed2netlearning,inc2 hello, how are you doing?...
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Hello, How are you doing?Today, we are going to start a new lesson on
Areas.
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AreaArea is defined as the number of square
units needed to cover a region or figure.
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Rules to find the area of Regular figure Find the area of the square tiles. The figure indicates 1 square
unit for each square tile. Count the total number of
square units. There are 4 tiles. So, the area
of the figure is 4 square units.
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To find the area of the irregular figure.Step 1: Separate the irregular figure into 2
rectangles. Count the number of square tiles in the larger rectangle.
Step 2: Count the number of tiles in the smaller rectangle.
Step 3: Add the number of squares in each rectangle to find the area of irregular figure.
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Find the area of the figure given below.Answer- Area of bigger rectangle
= 8 square unitsArea of smaller rectangle = 2 square unitsArea of the figure
= 8 + 2 = 10 square units
Each square indicates 1 unit.
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If a square has an area of 16 square units, how many rows and columns of squares does it have?
Answer- 4 rows and 4 columns
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What is the area of the rectangle having 4 rows and 9 columns?Answer – 36 square units
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Which is greater for the given figure?Area or perimeterAnswer - Area
3 cm
20 cm
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What is the area of the square of side 2 feet?a) 4 feetb) 4 square c) 4 square feetd) None of these
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Which is true about the area?a) Area is the sum of the sides of the figureb) It is not possible to find the area of the
square.c) Both a and bd) None of these
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A room in the Howard’s house is 25 m long and 15 m wide. Find the area of the room.
Answer – 375 square units
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2. Find the area of the room having length of 20 m and width of 15 m?Answer – 300 square meter
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3. If the cost of leveling 1 square meter is $10, what is the cost of leveling the room?Answer - $3,000
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4. The Public Library is 300 m long and 100 m wide. What is the area of the library?Answer – 30,000 square meter
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5. Find the area of small square shaded in the figure given below.
Answer – 4 square units
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6. What is the difference in the large square and the small square?Answer- 8 square units
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8. Find the area of the rectangle given below.a) 18 square cmb) 24 square cmc) 80 square unitsd) 80 square cm
20 cm
4 cm
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9. Find the area of the shaded region.a) 1 unitb) 1 square unitc) 9 unitsd) 9 square units
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10.Find the area in square units.a) 12 square unitsb) 24 square unitsc) 6 square unitsd) None of these
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Recap Area Rules to find Area of regular figure Rules to find area of the irregular figure Solved Examples Practice Problems