Question

the height of each door on the plan is given as 1,5cm but the height of each door is 1,92m in actual size. Show that the scale of the house is 1:128.

Answer 1

Answer:

Solution:

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\times b=4.5m\times3.6m=\ 16.20m^2l×b=4.5m×3.6m= 16.20m

2

Area of the door = l\times b=2m\times1m=2m^2l×b=2m×1m=2m

2

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

=Rs\ 14.20\times20=Rs\ 284.00=Rs 14.20×20=Rs 284.00

Hence, the required area= 14.20m^214.20m

2

and the required cost= Rs 284