Question

8. In the figure, the area of the shaded portion is:
(A) 15.25 sq cm
(B) 12.75 sq cm
(C) 18.05 sq cm
(D) 20.60 sq cm
8cm
[Use a = 3.14]
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Answer 1

Answer:

Step-by-step explanation:

Area of the shaded region =  Area of semi circle - Area of right angled Δ

Area of semi circle = πr²

                                     2

Area of right angled Δ = 1   bh

                                           2

Here : π = 3.14 , r = 5cm , b = 6cm , h = 8cm

Area of the shaded region  =  πr² - 1   bh

                                                    2         2

Area of the shaded region  = 3.14 x 25         -   1     x  6 x 8

                                                         2                      2    

Area of the shaded region =  78.5           - 24

                                                       2        

                      = 39.25 - 24

Area of the shaded region  = 15.25cm²