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$\times$400 m = 800 m

$\therefore$ Distance covered in one round = Perimeter = 800 m

$\therefore$ Distance covered in three rounds = 3 $\times$800 m = 2400 m

Now, number of rounds to cover 4 km, i.e. 4000 m =$\frac{4000}{800}=5$ [$\therefore$ 1 km= 1000 m]

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