The area (in cm2) of the largest triangle that can be inscribed in a semicircle of radius rcm is:
A
13πr2
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B
2r2
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C
r2
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D
12πr2
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Solution
The correct option is Cr2 The largest triangle that can be made from a semi-circle will have: Base =2r Height =r where, r be the radius of semicircle. Area of Δ=12× Base × Height =12×2r×r=r2