Question

a rectangular field is 100 metre by 80. metre a boy walk around it at the rate of 3 kilometre per hour. what time will he taken in walking 2 around​

Answer 1

Perimeter is 360m
2 hours
6 km

Answer 2

Answer:

Length of field = 100 km

Breadth of field = 80 km

Perimeter = 2 × ( l + b )

Perimeter of field = 2 × ( 100 + 80 )

= 2 × 180

perimeter of field = 360 km

Time taken to run 1 km = 3 hours

time taken to run 360 km = 360 ÷ 3

time taken to run 360 km or 1 round = 120 hours

time taken to run 2 rounds or 720 km = 1 round + 1 round

= 120 + 120 = 240 hours .

therefore , it will take 240 hours for the boy to complete two rounds around the park .