Question

the Length breadth and height of a room are 5m 4m and 3M respectively.find the cost of white washing the Walls of the room are ceiling at the rate Rs. 7.50 per metre square . plz answer me​

Answer 1

L=5m

b=4m

h=3m

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

=2*(5+4)*3+5*4

=2*9*3+20

=54+20

=74

cost of white washing 1m=rs 7.5

cost of 74m=7.5*74=rs555