A model of a traffic signal on the road has a triangular base ABC with angle A = 90º and with a red circular light within it as shown n figure. If AB = 12cm and BC = 20cm and R is the incentre of the ∆ABC, find the area used for the red light.
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360 ..............................
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36 hgfgygjtwkoelelcsokxlldlhxehcdcjcdhjzc kc
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