A rectangular field is 90m by 70m A man walks around it at the rate of 4km per hour What - Maths - Mensuration

Question

A rectangular field is 90m by 70m A man walks around it at the rate
of 4km per hour What time will he take in making 5 rounds?( This
Question is based on --- PERIMETER )I need this Question's full
solution Plz help to solve this question

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A rectangular field is 90m by 70m.A man walks around it at the rate of 4km per hour.What time will he take in making 5 rounds?( This Question is based on --- PERIMETER )I need this Question's full solution .Plz.help to solve this question.