Question

a door of length 2m and breadth 1m is fitting in a wall. the length of the wall is 4.5m and the breadth is 3.5m(fig11.6).find the cost of white washing the wall if the rate of white washing the wall is ₹20per m2​

Answer 1

Answer:

length of wall=4.5m

breadth of wall =3.6m

area of the wall= length*breadth

                         =4.5 * 3.6= 16.2 sq meter

area of the door=length * breadth

                          =2 * 1= 2 sq meter

area of the whitewash=area of wall-area

                                    =16.2-2=14.2 sq. meter

cost of whitewash per meter sq.= Rs 20

cost of whitewash=Rs 20*14.2=Rs 284.00

Step-by-step explanation: