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प्रश्न
Find the area of the triangle whose vertices are: (–5, –1), (3, –5), (5, 2)
उत्तर
Area of the given triangle = `1/2 [-5 { (-5)- (4)} + 3(2-(-1)) + 5{-1 - (-5)}]`
`= 1/2{35 + 9 + 20}`
= 32 square units
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