$2\mathrm{.}1\mathrm{.}3$ You have been tasked to approximate the cost for $200$m electric cabling for the upcoming project in the next six months. In the next six months, the cost of $200$m of electric cableing may optimistically reduce to R$3500$ or most likely remain the same at R$6000/200$m$.$ However, if demand for solar panels increases, the pessimistic cost would be R$8000/200$m electric cabling.

NB: Show all the steps of the following calculations and round off your answer to

$2$ decimal places Required: Using the three$-$point estimation method, calculate the estimation of the $200$m electric cabling in the next six months.