very useful in practical life which I found in the 8th standard text book.....
- Find the area of the coloured region.
SOLUTION:
Given: radius of the quadrant of a circle = 3 cm
Length of the rectangle = 15 cm
Breadth of the rectangle = 8 cm
to find: Area of the coloured region = Area of the rectangle - area of the four quadrants of
a circle
= b × h sq.units - 4 × (1/4 ×πr2 )
= (15×8) - (22/7 × 3 × 3)
= 120 -28.29
=
91.714 cm 2
Area of the coloured region = 91.714 cm 2
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