Question

the base perimeter of a room is 44 m and height is 3 m . find the cost of painting its 4 walls at 100 rupees per m square. ​

Answer 1

Answer:

The painting charges of  four walls of room

= ₹ 13,200

Step-by-step explanation:

Let the length and breadth of the room are a and b

perimeter =2(a+b)=44 m

If height is h then area of 4 walls

A=h( a+b+a+b)

A=h×2(a+b)

Putting all values

A=3 × 44=132 m²

Painting rate = ₹ 100/m²

Thus cost of painting

=132 × 100

= ₹ 13,200

Thus the painting charges of  

four walls of room = ₹ 13,200