Listen NCERT Audio Books - *Kitabein Ab Bolengi*

6

Find the length of the side of a square whose area is 441 m^{2}

Let the length of the given side of the square be *x* m

Now,

Area of square = (*x*)^{2}

= 441 *m*^{2}

x =

The square root of 441 can be calculated as:

21 | |

2 | 4̅ 4̅1̅ -4 |

41 | 41 41 |

0 |

x = 21

Hence, the length of the side of the square is 21 m

6