Question

a room is 13m long 11 metre wide and 8 metre high what will be the expenses of colouring the walls @ 25 paise per metre square.

Solve this question I'm little bit confused​

Answer 1

Imagine standing in an empty hall with arbitrary lengths of sides. Assume the dimensions are 13×11×8. This means you gotta get 4 walls painted, two of which have dimensions 13×8 m² and two have dimensions 11×8 m², So total area to be painted = 2(13×8) + 2(11×8) = 384 m²

Cost of painting 1 m² = 25 paise = 0.25 rupees.

Cost of painting 384 m² = 96 rupees. Pretty cheep to paint a room, no?

Answer 2

Answer:

₹96

Step-by-step explanation:

area of four walls =2×h(l+b)

= 2×8(13+11)

=2×8×24

=48×8

cost of colouring =25p

=384×25

=9600

=₹96