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a) 40000 m square
b) 20000 m square
c) 10000 m square
d) 800 m square
correct answer is: c) 10000 m square
Explanation
We know,
\rightarrow Perimeter of a square = 4\ \times\ side
\rightarrow Area of a square = side^2
According to the question,
\left(4\ \times\ side\right)\ =400\ m
\rightarrow\ side\ =\ \frac{400}{4}\ m
\therefore side\ =\ 100\ m.
\therefore Area of the square = 100^2 or (100 \times 100) m^2
= 10000 m^2
Ans: Area of the square = 10000 m^2
