Question

the side of rectangle field are 80 meter by 18 meter respectivelly. find the length of its diagonal.

Answer 1

Ans. Let ABCD be a rectangle which AC is a diagonal.

Now, in triangle ABC

Using Pythagoras theorem,

AC²=AB²+BC²

AC =√80²+18²

AC=√6400+324=√6724=82

Hence, the length of diagonal is 82cm.