Question

a field is 3 hectometers long and 2 hectometers broad how much time will a man take to walk around it at a speed of 3 km per hour

Answer 1

Given ;

• l = 3 hectometer = 0.3km
• b = 2 hectometer = 0.2km

Thus perimeter = 2(l+b)

P = 2(0.3+0.2)

P = 2(0.5) = 1km

Thus distance = 1km

speed = 3km/hr

Thus ; s = d/t

t = d/s

t =

• 1/3 hr
• or 1/3 × 60 = 20minutes .

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