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  • Find the area of the shaded region in Fig.4 if ABCD is a rectangle with sides 8cm and 6cm and O is the centre of circle.

Find the area of the shaded region in Fig.4 if ABCD is a rectangle with sides 8cm and 6cm and O is the centre of circle.                  (Take\pi=3.14)

 

 
 
 
 
 

Answers (1)

AC is the diameter of circle. (H is touching the centre.)

Length of AC = diagonal of rectangle.

AC^2=6^2+8^2

AC^2=36+64

AC^2=100

AC=10

The radius of the circle = 10x1/2= 5cm.

Area of shaded region = Area of circle - Area of rectangle

                                     =3.14\times 5\times 5-8\times 6

                                     =78.5-48

                                     =30.5 cm^2

 

Posted by

Safeer PP

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