Question
The length of a diagonal in cms of a rectangle of length ( 5 mathrm{cm} ) and width ( 6 mathrm{cm} ) is:

The length of a diagonal in cms of a rectangle of length ( 5 mathrm{cm} ) and width ( 6 mathrm{cm} ) is:
(1) ( sqrt{61} )
(2) ( pm sqrt{61} )
(3) ( sqrt{11} )
( (4) pm sqrt{11} )
Solution

Diagonal of rectangle ( =sqrt{(5)^{2}+(6)^{2}} )
( =sqrt{25+36}=pm sqrt{61} )