Class: VBy Deepali SircarK.V. MEG & CENTREBANGALORE

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

18cm18cm18cm22cm26cmWhat is the perimeter of each of these shapes?

Perimeter = 18cmPerimeter = 22cmFind the perimeter

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

12cm222cm226cm2Find the area of each of these shapes

To find the area of an irregular shape you first count the full squares inside it

The area of the shape is 60cm2You then count all the other squares which have more than half the area covered

24cm225cm222cm235cm2What is the area of each of these shapes?

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?

20cm218cm214cm230cm222cm2What is the area of each of these shapes?

We can work out the area of a rectanglewithout the gridlengthwidthArea = length x width

36cm235cm220cm225cm24cm9cm7cm5cm5cm4cm2cm12.5cmNow find the area of the rectangles

worksheet

one

Find the perimeter & area

worksheet

three

Find the area

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

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

WorksheetWhat is the area of the moon?

_____________________cm2What is the area of the rectangle?

_____________________cm2What is the perimeter of the rectangle?

_____________________cmName:____________________

What is the area of the house?

_____________________cm2

The distance around the outside of a shape is called the perimeter.