Q 10.     By splitting the following figures into rectangles, find their areas (The measures are given in centimetres).

(a) Split the given figures into small rectangular parts as shown here;

Now, the area of the rectangle (I) =  = 4  3 = 12
the area of the rectangle (II) =  = 3  2= 6
the area of the rectangle (III) =  = 4  1 = 4
the area of the rectangle (IV) =  = 3  2 = 6

So, the total area of the figure = sum area of all rectangles
= (12 + 6 + 4 + 6)
= 28

(b) Split the given figure into smalle rectangles  as shown here;

the area of the rectangle (I) =  = 3  1 = 3
the area of the rectangle (II) =  = 3  1= 3
the area of the rectangle (III) =  = 3  1 = 3 ?

Therefore, the total area of the figure = sum of the area of all the small rectangles
=
=

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