Answer :

Given radius of semi-circle = 8 cm


For a largest triangle in semi-circle


base will be its diameter of semi-circle


height will be radius of semi-circle


so, its base = 2 × radius = 2 × 8 = 16 cm


height = 8 cm


Area of the triangle = × base × height


= × 16 × 8


= 64 cm2


So, option(c) is the correct answer.

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