Question

Find the cost of whitewashing of a room with dimension 12 x 15 x 10 given the cost for per square metre is rupees 8.50

Answer 1

the cost = 12×15×10×8.50

1800×8.50

rupees 153000

Answer 2

Answer:

area of Room= 2h(l+b) + lb

:-2*10(12+15) + 12*15

:- 20*27 + 180

:- 540 + 180

:- 720 square metre

Now

The cost of whitewashing of the room= 720*8.50

= Rupees 6120