• # question_answer The sum of the area of each staircase is: A) 6 square unit B) 12 square unit C) 10 square unit D) None of these

 Using the formula, Area of triangle $=\frac{1}{2}\times base\times height$ Sum of the area of each staircase $=\frac{1}{2}\times 1\times 2+\frac{1}{2}\times 2\times 1.6+\frac{1}{2}\times 2\times 1.6+\frac{1}{2}\times 2\times 1.8$ $=\frac{1}{2}\times (2+3.2+3.2+3.6)=\frac{1}{2}\times 12=6$