Find the distance travelled by Shaina if she takes three rounds of a square park of side 70 m.

Explanation

Perimeter of the square park `=4×text{side}`

`=4×70m`

`=280m`

Distance travelled by Shaina in one round `=` Perimeter of the square park.

`=280m`

Distance covered by Saina in `3` rounds `=3×280m`

`=840m`