Question

length of a rectangular field is 55 metre Rohit runs around the field at the rate of 5 km per hour if area of the field is 2310 square metre how long will it take to go 4 times around it

Answer 1

area of rectangle =2310 sq.m
L x b. =2310
55 x b =2310
b =2310/55
b = 42
perimeter of rectangle = 2(L+b)
=2(55+42)
=2(97)
=194m
speed =distance/time
therefore
time =distance /speed
t= 194/5
t=38.8s
he takes 4rounds of the park
194x4/5 =
155.5 seconds