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  • In Fig, OACB is a quadrant of a circle with centre O and radius 3.5 cm. If OD = 2 cm, find the area of the (ii) shaded region.

12.  In Fig, OACB is a quadrant of a circle with centre O and radius 3.5 cm. If OD = 2 cm, find the area of the

        (ii) shaded region.

                        

Answers (1)

best_answer

For area of shaded region we need to find area of the triangle.

Area of triangle is :- 

                                     =\ \frac{1}{2}\times 3.5\times 2

                                   =\ 3.5\ cm^2

Hence area of shaded region is  =  Area of quadrant   -  Area of triangle 

                                                 =\ \frac{77}{8}\ -\ 3.5

                                                =\ \frac{49}{8}\ cm^2

Posted by

Devendra Khairwa

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