Question

Length of a rectangular field is 55 m. Rohit runs around the field at the rate of 5 km/h. If area of the field is 2310 sq. m, how long will he take to go 4 times around it?

Answer 1

length =55m

area = 2310 sq. m
l*b =2310
b =2310/55
   =42m
perimeter of field =2(l+b)
  =2(97)
  =194m
speed = 5000m/hr
time taken =(4*194)/5000
  =0.15 h