A) 6 square unit
B) 12 square unit
C) 10 square unit
D) None of these
Correct Answer: A
Solution :
Using the formula, |
Area of triangle \[=\frac{1}{2}\times base\times height\] |
Sum of the area of each staircase |
\[=\frac{1}{2}\times 1\times 2+\frac{1}{2}\times 2\times 1.6+\frac{1}{2}\times 2\times 1.6+\frac{1}{2}\times 2\times 1.8\] |
\[=\frac{1}{2}\times (2+3.2+3.2+3.6)=\frac{1}{2}\times 12=6\] |
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