Question

The perimeter of the floor of a hall is 250 m . If the height is 4 m, find the cost of painting the four walls at the rate rs. 12 per square metre.

Answer 1

ANSWER:---------

given the perimeter of the floor of the hall = 250m

basically, halls are rectangular so their floor must be rectangular too.

→ 2 ( l + b ) = 250m

height of the hall is given = 4m

here we have to find the cost of painting the four walls at the rate rs. 12 per square metre.

so first of all, we have to find it's CSA.

CSA of the four walls = 2h(l + b)

= 250 × 4

= 1000m²

hence, total cost = 12 × 1000

= rupees 12000

T!–!ANKS!!