The perimeter of the foor of a hall is300 m and its height is 6 m. Fin

1.	The perimeter of the foor of a hall is300 m and its height is 6 m. Find the cost ofthe·painting the four walls at the rate of 15per square metre.1S
Answer» Perimeter = 300m2(l+b)= 300=> l+b= 150 mheight = 6mlateral surface area = 2(l+b)h= 2 1506 m²= 3006 m²= 1800m²Cost = 1800×15 = 27000 wrong and 27000

The perimeter of the foor of a hall is300 m and its height is 6 m. Find the cost ofthe·painting the four walls at the rate of 15per square metre.1S

Answer»

Perimeter = 300m2(l+b)= 300=> l+b= 150 mheight = 6mlateral surface area = 2(l+b)*h= 2* 150*6 m²= 300*6 m²= 1800m²Cost = 1800×15 = 27000

wrong and 27000