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ani

· started a discussion

· 1 Months ago

q (Question: 83323.0 )

data given cm

Question:

The area of a square park is 25 sq.km. The time taken to complete around of the field once, at a speed of 3 km/hour is

Options:
A) 4 hours 60 minutes
B)

4 hours 50 minutes


C) 6 hours 40 minutes
D) 5 hours 40 minutes
Solution:

Ans: (c) 

Area = 25 km2

Side =  √25 = 5 km

Perimeter = 4 × 5 = 20 km

S = D/T

Time taken in completing one round

= (Distance)/(Speed)

=\(\frac{20}{3}\) hrs =  6\(\cfrac{2}{3}\) hrs

6 hours \(\cfrac{2}{3}\)  × 60 = 6 hours 40 minutes.

Knowledge Expert

· commented

· 1 Months ago

Dear student,
It is not given in cm anywhere.
Keep learning,
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