Question

Length breadth and height of room are 5.5 m 3.2m and 3m respectively find the cost of painting the walls of 10 rupees per square metre

Answer 1

Here Length of room = 5.5 m

Breadth of room = 3.2 m

Height of room = 3 m

We know that Area of four walls = Lateral Surface Area of Cuboid

= 2 (L+B)× H

∴ Area to be painted = 2( 5.5 + 3.2) × 3 = 52. 2 m²

Now, cost of painting 1 m² = Rs 10

∴ Total cost of painting = Area of walls × 10

                                      = 52.5 × 10

                                       = Rs. 525

Answer 2

Answer:

522 is right Ans.

Step-by-step explanation:

2(l+b)* h

2*(5.5+3.2)*3

2*8.7*3

2*26.1

52.2*10

522.0

522ans..