Ravish
wanted to make a temporary shelter for his car by making a box-like structure
with tarpaulin that covers all the four sides and the top of the car (with
the front face as a flap which can be rolled up). Assuming that the stitching
margins are very small, and therefore negligible, how much tarpaulin would be
required to make the shelter of height 2.5 metre with base dimension `4m x 3m ?`