1.

The area of a circular ground is approximately equal to the \(73\frac{1}{3}\% \) area of a triangular ground with sides 400 m, 420 m and 580 m. What is the circumference (in m) of the circular ground?\({\left( {\pi = \frac{{22}}{7}} \right)^3}\)

A. 880 m
B. 440 m
C. 1056 m
D. 528 m
Answer» B. 440 m


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