The cost c of hiring a lorry to travel n miles is given by c=a+bn. The cost of travelling 100 miles is £82. The cost of travelli
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check the picture below.
recall that in a square, all four sides are equal, therefore b = a.
so the perimeter is then 6√2 + 6√2 + 6√2 + 6√2, or 24√2.
