davisryan09 davisryan09

25-02-2024
Mathematics

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How do you solve this

How do you solve this class=

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Wishful19 Wishful19

25-02-2024

Fence length:

28-18=10
30²-10²=800
Sqrt 800= 28.2843 = 28.3 metres

Area of lawn:

28.3x18=509.4 metres²
28.3x10=283/2=141.5 metres²
509.4+141.5=650.9 metres²

Amount of cans needed:

Each covers 100m² so 7 cans are needed

19.75x7=138.25

So total cost should be £138.25

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