Question

Length of a rectangular field is 250 m and width is 150 m. Anuradha runs around this field 3 times. How far did she run? How many times she should run around the field to cover a distance of 4 km?

Answer 1

Given, length of rectangular field `(l)` = 250 m

And width of rectangular field `(b)` = 150 m

Perimeter of the field = 2(l + b) 

= 2(250 + 150) m

= 2 × 400 m 

= 800 m

∵ Distance covered in one round = Perimeter = 800 m

∴ Distance covered in three rounds = 3 × 800 = 2400 m

Now, number of rounds to cover 4 km,  

i.e. 4000 m  ...[∵ 1 km = 1000 m]

= `4000/800`  

= 5  

Hence, she should run 5 times around the field around the field to cover the distance of 4 km.