A rectangular carpet has on area of 120 sq. metres and a perimeter of 46 metres . The length of its diagonal is :
2( l + b) = 46
or L + b = 23 Also , lb = 120.
`:.` Diagonal = `sqrt(l^2 + b^2)`
= `sqrt(( l + b)^2 - 2lb)`
= `sqrt((23^2) - 240)`
=`sqrt(289)` = 17 m.
Submit Comment/FeedBack