Find values of k if area of triangle is ...

Find values of k if area of triangle is 4 sq. units and vertices are
` ( i) (k,0),(4,0) ,( 0,2) " " ( -2,0),( 0,4),( 0,k ) `

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The correct Answer is:

`(i) 0.8 ,(ii) 0.8 , `

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