Question

Solve the following problems.
2. A gate having dimensions 2m×1m is in the wall of 3m×5m. If the cost of colouring is Rs. 100 per m2, find the total cost of colouring the wall.​

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

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

Hence, the required area= 14.20m^2 and the required cost= Rs 284

Step-by-step explanation:

Answer 2

step-by-step explanation:

Given : A gate having dimensions 2m×1m is in the wall of 3m × 5m. If the cost of coloring is Rs 100 per m²,

To find : the cost of colouring wall.​

Solution:

wall of 3m × 5m.

Area of the wall = 3 * 5 = 15 m²

gate having dimensions 2m×1m

Area of gate = 2 * 1 = 2 m²

Area of the wall to be painted = Area of the wall - Area of gate

=> Area of the wall to be painted = 15 - 2

=>  Area of the wall to be painted =  13 m²

cost of coloring is Rs 100 per m²

Hence cost of coloring wall = 100 * 13  = Rs 1300