Question 1090074
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This triangle has horizontal side JK of the length 7.


It lies on the straight line y = 4.


The altitude drawn from the vertex L to the side JK has the length 4 - (-3) = 7.


Hence, the area of the triangle is {{{(1/2)*7*7}}} = {{{49/2}}} = 24.5 square units.
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Solved.