Question

in the fig triangle ABC is in the semicircle. find the area of shaded region given that AB= 42cm​

Answer 1

Answer:

The area of shaded region is 251.37

Step-by-step explanation:

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Answer 2

Answer:

radius of semicircle, r = 21 cm

height of the triangle, h = radius of semicircle = 21 cm

base of the triangle, b = 42 cm

Solution :-

area of shaded region = πr²/2 - 1/2*b*h

                                      = 22/7 * 21 * 21/2 - 1/2 * 42 * 21                                          

                                      = 693 - 441

                                      = 252 cm²