The triangle side walls of a flyover have been used for advertisements. The sides of the walls are `122 m ,\ 22 m\ a n d\ 120 mdot` . The advertisements yield an earning of `R s .5000\ p e r\ m^2p e r\ y e a rdot` A company hired both walls for 3 months. How much rent did it pay?

Explanation

Solution
In `/_\ABC`
`a=122m,b=22m,c=120m`
`s= (2/a+b+c)=(2/122+22+120)`
=`132m`
ar `/_\ABC= sqrt(s(s−a)(s−b)(s−c))`
= `sqrt(132(132−122)(132−23)(132−120))`
=`sqrt(132×10×110×12)`
=`sqrt(132×10×11×10×12)`
=`sqrt((132)^2×(10)^2)`
=`132×10=1320 m^2`
Rent of `1m^2` per year = Rs`5000`
Rent of `1m^ 2` per month = Rs.`(12/5000)`
Rent of `1m^2` for `3`months=Rs.`(12/3×5000)`
Rent of `1320 m^2` for `3` months=Rs.`(12/3×5000×1320)`
= Rs.`16,500,000`