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21-05-2020
Mathematics

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surface area of this cone

surface area of this cone class=

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21-05-2020

Answer:

1041.27

Step-by-step explanation:

A=πrl+πr2

l=r2+h2

Solving forA

A=πr(r+h2+r2)=π·12·(12+102+122)≈1041.26829

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