Question

The floor of a rectangular hall has a perimeter of 250m. If it's height is 6m. Find the cost of painting its four walls at the rate of Rs.20 per m square.

Answer 1

Height of rectangular =6m Perimeter =250m We know that Perimeter of rectangle=2(l+b) 250=2(l+b) Area of four walls =2(l+b)h We know the value of 2(l+b) Area of four wall=250*6 Area of four wall =1500m^2 Cost of painting =rate *area Cost of painting four walls =20*1500 Cost=30000rs

Answer 2

Answer:

Step-by-step explanation:

Given :-

Perimeter of floor = 250 m

Height = 6 m

Cost of painting 1 m² = Rs. 20

To Find :-

Cost of painting its four walls.

Solution :-

Area of 4 walls = 250 × 6

Area of 4 walls = 1500 m²

Then, we will find the cost.

Cost of painting 1 m² = Rs. 20

Cost of painting 4 walls = 1500 × 20

Cost of painting 4 walls = Rs. 30000

Hence, the cost of painting its four wall including door and window is Rs. 30000.