Question

A rectangular field is 72m by 58m.Keya walks around it at the rate of 3km per hour.How long will she take to make 3 rounds?

Answer 1

Length-72 m
Breadth-58 m
Perimeter=2(l+b)
=2(72+58)
2 X 130
=260
Time keya would take 1 round
=(260/3)hr
=86.65
Time for 3 rounds
=86.65 X 3
=259.95(ANSWER)

Answer 2

The perimeter is 2(72+58) = 260m
260(3) = 780 m total distance = 0.78 km
km/(km/hr) = hours
0.78/3 = 0.26 hours
(0.26 hours)(60 min/hr) = 15.6 minutes
(0.6 min)(60 sec/min) = 36 seconds
15 minutes 36 seconds