How long will a man take to go, walking at 4 km per hour, twice round a circular garden of 70 m radius	Choose the correct choice from the following:  A) 11  B) 28  C) 26  D) 18  E) 111
Answer:28
<result>B</result>
How long will a man take to go, walking at 4 km per hour, twice round a circular garden of 70 m radius