rectangular room is 18 metre long and 12 metre wide metre wide is all around it find the cost of constructing the path at the rate of rupees 100 m square
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l=18m,b=12m,width of the path=1m ,so,L=18+2(1)=20m,B=12+2(1)=14m
area of the path=LB-lb=20×14-18×12=280-216=64sq.m
total cost=64×100=6400₹
area of the path=LB-lb=20×14-18×12=280-216=64sq.m
total cost=64×100=6400₹
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