Question

the dimensions of a hall is 10m×9m×8m. find the cost of white washing the wall and ceiling at the rate of 8.50 per mx^​

Answer 1

area of hall=2(lb+bh+lh)

area of hall=2(10*9+9*8+10*8)

area of hall=2(90+72+80)

area of hall=2(242)

area of hall=484sqm

cost=area×cost per sqm

cost=484×8.50

cost=4114 Rs

cost of white washing the wall and ceiling will be 4114 Rs

Answer 2

total surface are =2(lb+bh+lh)

total White White wash=2(10*9+9*8+10*8)

=2(242)

=484

cost for White wash=8.5*484

=4114 rupees