The area of a rectangle is 3584m.sq and its length is 64 m. A boy runs around the field at the rate of 6km/h. How long will he take to go 5times around it.
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1 answer · Mathematics
Answer
Breadth of the field = Area/length = 3584/64 = 56m
Perimeter of the field = 2(l + b)
= 2 (64 + 56)
= 2 * 120
= 240 m
Distance he will cover in 1 round = 240 m = 0.24 km
Distance he will cover in 5 rounds = 0.24 * 5 = 1.2 km
Time taken = Distance / speed = 1.2 / 8 = 0.15 hour
I hour = 60 min
0.15 hours = 0.15 * 60
= 9 min
Answer
Breadth of the field = Area/length = 3584/64 = 56m
Perimeter of the field = 2(l + b)
= 2 (64 + 56)
= 2 * 120
= 240 m
Distance he will cover in 1 round = 240 m = 0.24 km
Distance he will cover in 5 rounds = 0.24 * 5 = 1.2 km
Time taken = Distance / speed = 1.2 / 8 = 0.15 hour
I hour = 60 min
0.15 hours = 0.15 * 60
= 9 min
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