Question

(a) A door of length 2m and breadth Im is fitted in a wall. The length
of the wall is 4.5m and the breadth is 3.6m. Find the cost of white
washing the wall @rs25/ per square metre.​

Answer 1

Answer:

Length of wall= 4.5m

Breadth of the wall= 3.6m  

Length of the door =2m

Breadth of the door= 1m

Area of the wall = l×b

=4.5m×3.6m

=16.20m²  

Area of the door = l× b

=2m×1m=

2m²

Therefore area of the wall to be white washed= Area of the wall - Area of the door

=Rs 14.20×20

=Rs 284.00

Hence, the required area= 14.20m²

 and the required cost= Rs 284

$\:$