Question

If the length and breadth of a room are 6m,4m and 3m respectively. the total cost of painting all 4 walls is rs 100 per sq meters

Answer 1

fthe room is cuboid
therefore,surface area of cuboid=
2lh+2lw+2hw
2(6×3)+2(6×4)+2(4×3)
36+48+24
=102 sq m
the cost of painting is 4 per m
102×4
=408 rs
hope this helps you

Answer 2

Hi ,

dimensions of the room ,

length = l = 6 m

breadth = b = 4 m

height = h = 3 m

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

A = 2 ( 6 + 4 ) × 3

= 6 × 10

= 60 sq m

cost of painting 1 sq m = Rs 100

cost of painting 60 sq m = 60 × 100

= Rs 6000

I hope this helps you.

:)