A) \[\text{6}0\text{ c}{{\text{m}}^{\text{2}}}\]
B) \[\text{4}0\text{ c}{{\text{m}}^{\text{2}}}\]
C) \[\text{125}\,\text{c}{{\text{m}}^{\text{2}}}\]
D) \[\text{8}0\,\text{c}{{\text{m}}^{\text{2}}}\]
Correct Answer: D
Solution :
Given\[-\left( \frac{1}{n}+\frac{2}{n}+........'n'\,terms \right)\]and \[=n-\left( \frac{1+2+3+.....+'n'terms}{n} \right)\], PO = 4 cm, QO = 7 cm and area of \[=n-\frac{n(n+1)}{2n}\].You need to login to perform this action.
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