Answer:
59.25 euros
Step-by-step explanation:
The figure that is formed is the following with the respective measurements, now to calculate the area we need the height, for Pythagoras we have:
17 ^ 2 = h ^ 2 + 8 ^ 2
h ^ 2 = 289 - 64
h ^ 2 = 225
h = 15
now the figure area is as follows:
A = h * (b + a) / 2
b long side 20 m and short side 12 cm, replacing:
A = 15 * (12 + 20) / 2
A = 240 m ^ 2
We are told that each can of weedkiller can cover up to 100m ^ 2
Thus:
240/100 = 2.4, so you would need 3 cans of weedkiller
each can costs 19.75, which means that the total cost is:
19.75 * 3 = 59.25 euros
