Question

10) A room is 13m x 8m x 7m. Find the cost of cementing its four walls and floor at
the rate of Rs 8.Sper square meter​

Answer 1

Answer:

Area of Four walls and floor = 398 sq. m

Cost of painting = rs. 3383

Step-by-step explanation:

Hope it will help you Mark

Answer 2

Answer:

Rs.3184

Step-by-step explanation:

We need to find surface area of the 4walls and floor

= LSA of cuboid+ base

= 2(l+b)h + l*b

l= 13 , b=8 , h=7

= 2 (13+8) *7 +  13*8

= 2 (21) * 7  + 104

= 42*7 +104

= 294 + 104

=398 $m^{2}$

398 * 8

=  3184