Which book needs more space? The Atlas needs more space because it has a bigger surface.
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Transcript of Which book needs more space? The Atlas needs more space because it has a bigger surface.
![Page 1: Which book needs more space? The Atlas needs more space because it has a bigger surface.](https://reader036.fdocuments.net/reader036/viewer/2022062518/56649ccf5503460f9499b748/html5/thumbnails/1.jpg)
![Page 2: Which book needs more space? The Atlas needs more space because it has a bigger surface.](https://reader036.fdocuments.net/reader036/viewer/2022062518/56649ccf5503460f9499b748/html5/thumbnails/2.jpg)
Which book needs more space?
The Atlas needs more space because it has a bigger surface.
![Page 3: Which book needs more space? The Atlas needs more space because it has a bigger surface.](https://reader036.fdocuments.net/reader036/viewer/2022062518/56649ccf5503460f9499b748/html5/thumbnails/3.jpg)
Which shape needs more space?
The yellow one needs more space.
![Page 4: Which book needs more space? The Atlas needs more space because it has a bigger surface.](https://reader036.fdocuments.net/reader036/viewer/2022062518/56649ccf5503460f9499b748/html5/thumbnails/4.jpg)
Which object needs more space?
The amount of surface covered by the blackboard is called the
area.
Blackboard Student’s desk
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Which shape has the larger area?
Sometimes it is difficult to tell.So what do we need to do?
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We can use small squares to cover small objects.
We can use sheets of newspaper to cover larger surfaces.
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The area of the shape can be found by ticking the square as each one is counted.
How can we find the area of a shape which has been drawn on squared paper?
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Area = _____ square units.
12
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Area = _____ square units.
16
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Area = _____ square units.
20
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Area = _____ square units.
24
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Find the area of these shapes.
Different shapes can have same area.
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Shapes can be made up of whole squares and half squares.
Two halves make up one whole square.
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Letter E has 15 wholewhole squares and 1 halfhalf square.
Area = 15 ½ square units
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Letter A has: 14 wholewhole squares 2 halfhalf squares (2 halves make 1 whole square)
Area = 14 + 1 square units = 15 square units
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This shape has: 20 wholewhole squares 12 halfhalf squares (2 halves make 1 whole square)
Area = 20 + 6 square units = 26 square units
12 half squares = 6 whole squares
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Area = _____ square units.
___ whole squares + ___ half squares 22
20 4
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Area = _____ square units.
___ whole squares + ___ half squares 16 6
19
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Area of letters and shapes can be found by using the
nailboard.
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To take measurements we can use the:
• metre ruler• measuring tape• trundle wheel• ruler
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1 square represents 1 cm
Area = _____ square centimetres.
26
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1 square represents 1 cm
Area = _____ square centimetres.
26 ___ whole squares + ___ half squares 24 4
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1 square represents 1 cm
Area = _____ cm2. 26
Area= 6.5 cm x 4 cm = 26
cm2
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length
bre
ad
th
Area = length x breadth
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11 cm
7 c
m
Area = length x breadth = 11 cm x 7 cm
= 77 cm2
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Length Breadth6cm 5cm5cm 4cm8cm 3cm9cm 4cm6cm 6cm20cm 8cm
30cm2
20cm2
24cm2
36cm2
36cm2
160cm2
Area
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1 cm1 c
m
1 m
1 m
Area = 1cm x 1cm =
1cm2
Area = 1m x 1m= 1m2
Large surfaces are measured in m2
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Old Trafford Stadium has a length of 150 metres and a width of 50 metres. What is the area of this football ground? 150m
50m
150m
50m
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A field is 17m long and 15m wide. What is the area of the field?
17m
15m15m
17m
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The diagonal divides the rectangle into 2 equal triangles.
10 cm
6 c
m
= ½ (area of rectangle)
Area of
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10 cm
6 c
m
Area of rectangle = 60 cm2
Area of
Area of each triangle = 30 cm2
= ½ (length x breadth)
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4 cm
7 c
m
AABB
8 cm5 c
m
CC
6 cm
10 c
m
40 cm40 cm22 30 cm30 cm2228 cm28 cm22
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6 cm12 c
m
5 c
m
10 cm
AA
BB
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4 cm5 c
mAA
Area of rectangle A = 5cm x 4cm = 20
cm2
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Area of rectangle B = 10cm x 7cm = 70
cm2
10 cm7 c
m
BB
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6 cm12 c
m
5 c
m10 cm
AA
BB
rectangle A = 20cm2 rectangle B = 70cm2 +
= 90cm2
area
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5 cm
2 cm
11 c
m
8 c
m28 cm28 cm22
31 cm31 cm22
55 cm55 cm22
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14 cm
22 cm
8
cm
16 c
m
BB
AA
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AA
Area of rectangle A = 22cm x 16cm
= 352cm2
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8
cm BB
Area of rectangle B = 14cm x 8cm
= 112cm2
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14 cm
22 cm
8
cm
16 c
mBB
AA
Area of rectangle A = 352cm2 Area of rectangle B = 112cm2
-
Area of border
= 240cm2
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A rectangular pond, 6m long and 4m wide, has a path 1.5m wide all around it. Find the area of this path.
PonPondd
4 m
6 m
1.5 m1.5 m
1.5
m1
.5 m
9m9m
77 mm
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77 mm
9m9m
PonPondd
Area of rectangle = 9m x 7m
= 63m2
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PonPondd
Area of pond = 6m x 4m
= 24m2
6m6m
44 mm
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PonPondd
4 m
6 m
1.5 m1.5 m
1.5
m1
.5 m
9m
7m
Area of rectangle = 63m2 Area of pond
Area of path = 39m2
= 24m2 -
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