length 80 m. Which plot has the gie13. A rectangular field is 60 m wide and its perimeter is 320 m. If laying of grass costs.50 per squaremetre, how much would it cost for grass to be laid on the field leaving a bare path 4 m wide all aroundthe field?What is the area of unshaded region?

length 80 m. Which plot has the gie13. A rectangular field is 60 m wid

1.	length 80 m. Which plot has the gie13. A rectangular field is 60 m wide and its perimeter is 320 m. If laying of grass costs.50 per squaremetre, how much would it cost for grass to be laid on the field leaving a bare path 4 m wide all aroundthe field?What is the area of unshaded region?
Answer» B=60mp=320mnow,2(l+b)=320l+60=160l=160-60l = 100mnow,new length =100-(2×4)=92mnew bredth=60 -8=52marea=92×52=4784 m squrecost =4784×7.5=35,880