Question

A room of 15m long 4 m broad and 3m high.find the cost of white washing to 4 walls at 50P.per

Answer 1

Area of 4 walls orLateral surface area=2(l+b)×h sq units.      =                                =2(15+4)×3 sq units.                                                            =2×19×3 sq units.                                              =114 m^2.                                                    Cost of white washing four walls=₹(0.5×114)=₹570.0