Question

The floor of a rectangular hall has a perimeter of 250m its height is 60 find the cost of painting its four wall including door and window the rate of rupees 6 per square metre

Answer 1

Answer:

Step-by-step explanation:

Correct Question :-

The floor of a rectangular hall has a perimeter of 250 m its height is 60 m. Find the cost of painting its four wall including door and window the rate of rupees 6 per square metre .

Given :-

Perimeter of floor = 250 m

Height = 60 m

Cost of painting 1 m² = Rs. 6

To Find :-

Cost of painting its four walls.

Solution :-

Area of 4 walls = 250 × 60

Area of 4 walls = 15000 m²

Then, we will find the cost.

Cost of painting 1 m² = Rs. 6

Cost of painting 4 walls = 15000 × 6

Cost of painting 4 walls = Rs. 90000

Hence, the cost of painting its four wall including door and window is Rs. 90000.

Answer 2

Answer:

₹90,000

Step-by-step explanation:

Given:

The perimeter of the floor = 250 m = 2(length of the floor+width of the floor).

2(l+b)=250                                      ...(i)

Height=60 m

Area of the 4 walls = 2(l+b)*height given

=250*60           [from (i)]

=15000 m³

Cost of painting its four walls = 6*15000

= ₹ 90,000

Thus, the cost of painting the four walls of the room is Rs. 90,000.