Question

8. A door of length 10m and breadth Im is fitted in a wall. The length of the wall is 4.5 m and the breadth is 90m(Fig11.6) Find the cost of white washing the wall, if the rate of white washing the wall is * 50per m​

Answer 1

Heya mate ! Here's your answer:-

Length of door = 10 metre

Breadth of door = 1 metre

Area of door = 10×1m²

= 10m²

Length of wall = 4.5 m

Breadth of wall = 90 m

Area of wall = 4.5×90 m²

= 405.0²

Total wall without door = 405-10m²= 395m²

Now, rate = Rs.50/m²

Cost = 395×50=Rs. 19750

_____

I heard that you are becoming a moderator . Best of luck :-)