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The total cost of fencing a square field at ₹ 12 per metre is ₹ 720. Find the:
(a) Perimeter of the square field.
(b) Side of the square field.
Given: The total cost of fencing a square field at ₹ 12 per metre is ₹ 720
To find: We have to find the side and perimeter of the square field.
Solution:
Let side length of the square field = a
Now,
Perimeter of square field = 4a
Given that:
Total cost of fencing = ₹ 720
Perimeter of square field $\times $ Cost of fencing per meter = ₹ 720
4a $\times $ 12 = ₹ 720
4a = ₹ $\frac{720}{12}$
4a = 60
a = $\frac{60}{4}$
a = 15 m
Therefore,
a) Perimeter of the square field = 4a = 4 $\times $ 15 m = 60 m
b) Side length of the square field = a = 15 m
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