Question

# The length of the rectangular field is 65 meters , it’s width is 35 meters . Joni ran around the track 4 times. How far did she run?

Hint: Firstly draw the diagram of the rectangle and mark it’s sides as per given information. And calculate the perimeter of the rectangle . As Joni runs 4 times so multiply the perimeter by 4 and thus the required answer will be obtained.

The perimeter of the rectangle can be given as ${\text{2(x + y)}}$ , where x and y are the length and breadth of the rectangle.
Therefore , 4 times the perimeter will be our required answer.
$x = 65 \\ y = 3{\text{5}} \\$
On substituting the values in equation of perimeter we get,
$\Rightarrow 2(x + y) \\ \Rightarrow 2(65 + 35) \\ \Rightarrow 200m \\$
So, as Joni runs 4 times, we multiply the perimeter by 4,
$\Rightarrow 4(2(x + y)) \\ \Rightarrow 4(200) \\ \Rightarrow 800m \\$
Thus , Joni used to cover the distance of 800 m by running 4 times around a rectangular field.

Note: A rectangle is a 2D shape in geometry, having 4 sides and 4 corners. Its two sides meet at right angles. Thus, a rectangle has 4 angles, each measuring 90 ̊. The opposite sides of a rectangle have the same lengths and are parallel.
Properties :