Question

the floor of rectangular hall has parameter of 250 its height is 6 m find the cost of pending its for wall as the rate of 8. 50 per square metre

Answer 1

perimeter of rectangle = 2{l+b}

250=2{l+b}

area of four walls =2{l+b}*h

area of four walls =250*6

area of four walls =1500m square 

cost of painting of four walls=1500*8.50

cost of painting of four walls = rupees 12750
 

Answer 2

Area
$250 \times 6 = 1500$
Cost =
$1500 \times 8.50 = 12750$
Answer 12750Rs.