The given dimensions are 10 ft and 17 ft
Now looking at the dimensions, we can assume it is rectangular in shape and therefore the formula of the area of a rectangle is:
Area = length × width
(length = 17 ft (longest side) and width = 10 ft)
1st step: Substitute the dimensions in the formula:
A = L × W
= 17 × 10 (order doesnt matter!)
= 170 ft²
Coming to the cost, 1 ft² costs 16 (lets keep it £, or €, or $, since the unit is not provided)
2nd step: We multiply the area by the cost to find the total amount!
(Because every squared feet is 16 and therefore we conclude with this formula)
Cost = 170 ft² × 16£
= £2,720
Ronnie will have to pay £2,720 (or any other currency units)