Question

a door of a length 2m and breadth 1m is fitted in a wall the length of the wall is 4.5 M and the length is 3.6 M find the cost of the white washing of the wall if the rate of the whitewashing walls is rupees 20 per metre square ????

pls answer fast !!

Answer 1

Hi

First let's find the area of the door

Length of door = 2

Breadth of door = 1

Area = L*b = 2*1 = 2m sq.

Now find the area of wall

Length of wall = 4.5m

Breadth of wall = 3.6m

Area of wall = L*b = 4.5*3.6= 16.2m sq

As door is fitted in the wall that much area of door will be removed from the area of wall

Area of wall - Area of door

16.2 - 2 = 14.2 m sq.

Now cost of whitewashing per m sq. Is Rs 20 then cost of total whitewash will be

14.2*20 = Rs 284