A square playground measure 1127.6164 sq.m. If a man walks $$2\frac{9}{{20}}$$ m a minute, the time taken by him to walk one round around it is approximately :
A. 50.82 minutes
B. 54.82 minutes
C. 54.62 minutes
D. 50.62 minutes
Answer: Option B
Solution(By Examveda Team)
Let side of the square playground is $$x$$Ans Area :
$$\eqalign{ & {x^2} = 1127.6164 \cr & x = \sqrt {1127.6164} \cr & x = 33.58 \cr} $$
Perimeter of playground :
$$\eqalign{ & = 4x \cr & = 4 \times 33.58 \cr & = 134.32 \cr} $$
Time taken to complete 1 round :
$$\eqalign{ & = \frac{{134.32}}{{2\frac{9}{{20}}}} \cr & = \frac{{134.32}}{{49}} \times 20 \cr & = 54.82\,\,\text{minutes} \cr} $$
Related Questions on Speed Time and Distance
A. 48 min.
B. 60 min.
C. 42 min.
D. 62 min.
E. 66 min.
A. 262.4 km
B. 260 km
C. 283.33 km
D. 275 km
E. None of these
A. 4 hours
B. 4 hours 30 min.
C. 4 hours 45 min.
D. 5 hours
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