Answer:
2.4 cans cost 47.4
If you cannot buy 2.4 cans, you must buy 3 cans, then you'll pay 59.25
Step-by-step explanation:
The lawn has trapezoidal shape, so find the area of the trapezoid using formula
In the diagram, ABED is rectangle, so BE = 12 m, thus ED = 20 m - 12 m = 8 m.
Consider right triangle EDC. By the Pythagorean theorem,
Thue,
Height = 15 m
Find the midline:
Hence,
One can cover to cover
is needed
cans
One can costs 19.75, so 2.4 cans cost
If you cannot buy 2.4 cans, you must buy 3 cans, then you'll pay
