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Class: VBy Deepali SircarK.V. MEG & CENTREBANGALORE
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8 cm6 cm8 cm6 cmThe perimeter of the shape is 8 + 6 + 8 + 6 = 28cm.The distance around the outside of a shape is called the perimeter
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18cm18cm18cm22cm26cmWhat is the perimeter of each of these shapes?
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Perimeter = 18cmPerimeter = 22cmFind the perimeter
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The area of this shape is 18cm2To find out how much shape is inside, we can count the squaresThe area of a shape is the amount of space inside it
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12cm222cm226cm2Find the area of each of these shapes
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To find the area of an irregular shape you first count the full squares inside it
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The area of the shape is 60cm2You then count all the other squares which have more than half the area covered
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24cm225cm222cm235cm2What is the area of each of these shapes?
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The area of the shape is 48cm2The rectangle is made of 6 rows of 8 squaresTo work out the number of squareswe multiply 6 by 8Counting each square can take a long time. Is there a quicker way?
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20cm218cm214cm230cm222cm2What is the area of each of these shapes?
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We can work out the area of a rectanglewithout the gridlengthwidthArea = length x width
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36cm235cm220cm225cm24cm9cm7cm5cm5cm4cm2cm12.5cmNow find the area of the rectangles
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worksheet
one
Find the perimeter & area
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worksheet
three
Find the area
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Now try this1 One side of a square garden is 5 m. What will be the length of the fencing required?Fencing= the boundary = perimeter = sum of all sides = 5+5+5+5 (or 4x5 because its a square) = 20 m2. A 20 m-long thin wire is formed into a rectangle. If the width of this rectangle is 4 cm, what is its length?Length = 6cm 3. Find the area of a rectangle with length of 6 cm and width of 4 cm Area = length x width = 6x4 sq cm = 24 sq cm
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How to calculate THE PERIMETER of a TRIANGLEThis is easy !! Lets see how To find the perimeter you just need to add up the length of all the 3 sides..
This method works with any other shape that doesnt have parallel sides like a rectangle. 5 cm13 cm11 cmThe perimeter is= 5cm+11cm+13cm= 29 cm
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WorksheetWhat is the area of the moon?
_____________________cm2What is the area of the rectangle?
_____________________cm2What is the perimeter of the rectangle?
_____________________cmName:____________________
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What is the area of the house?
_____________________cm2
The distance around the outside of a shape is called the perimeter.