Question

find the areas of the shaded regions ​

Answer 1

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Answer 2

Answer:

106.76

Step-by-step explanation:

Area of shaded region  =  area of semi-circle  -  area of circle

given:-  radius of circle(r) = 4cm

             radius of semicircle(R) =6 cm                              (as shown in the diagram)

Solution:-

area of shaded region =    1/2πR² + πr²

                                     =     1/2 x 3.14 x (6)²  +  3.14 x (4)²

                                     =     1/2 x 3.14 x 36   +   3.14 x 16

                                     =      56.52   +    50.24

                                     =      106.76

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