Respuesta :

Answer:  " 20 square units " ;  or, write as:  " 20 units² " .
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Note:
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The formula for the area, "A" of a triangle:

   " A = (1/2) * b * h " ; 

   in which:  "A = area" (for which we are to solve); 
                    
                    "b = base length" = 8 (given) ; 

                    "h = perpendicular height = 5 (given) ; 

   A = (1/2) * b * h = (1/2) * 8 * 5 = 4 * 5 = 20 .
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Answer:  The area of the triangle given is:  " 20 units² " ; 
                                                                     or, write as:  " 20 square units" .
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Edit:  Another way to write the formula for the area, "A", of a triangle is: 

  " A = (b * h) / 2 " ;  

and we can solve:   " A = (b * h) / 2 = (8 * 5) / 2 = 40 / 2 = 20 .
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The answer is:  " 20 square units " ;  or, write as:  " 20 units² " .
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