Question

a window of length 1.5m 0.5 m is on the wall of length 4.5 n and breadth 3.5 m find the cost of white washing the wall at the rate of rs 25 per Sq. m​

Answer 1

Answer:

Rate of white washing  =  375 rupees

Step-by-step explanation:

Area of wall = l * b = (4.5*3.5) m^2

=> Area = 15.75 m^2

=> Area of window = l * b = (1.5*0.5) m^2

=> Area = 0.75 m^2

=> Area of wall to be white washed = (15.75-0.75) m^2

                                                           = 15m^2

=> Cost of white washing = 25 rupees / Sq. m

=> Total cost = (15*25) rupees = 275 rupees